Download or read book Forest Products Mine Timber Used Underground written by United States. Bureau of the Census and published by . This book was released on 1925 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Products written by and published by . This book was released on 1914 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Products written by United States. Bureau of the Census and published by . This book was released on 1925 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Bibliography of North American Forestry written by Edward Norfolk Munns and published by . This book was released on 1940 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Survey Release written by United States California Forest and Range Experiment Station and published by . This book was released on 1952 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forest Survey Release written by California Forest and Range Experiment Station, Berkeley and published by . This book was released on with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Census of Forest Products written by United States. Bureau of the Census and published by . This book was released on 1928 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimum Timeframes for Detecting Songbird Vocalizations in the Black Hills written by Todd R. Mills and published by . This book was released on 2000 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Birds are indicators of vegetation structure and ecological conditions. The singing activity of birds declines during late-morning periods, which can affect estimates of abundance and conclusions regarding vegetative conditions indexed by birds. Therefore, it is important to quantify periods of bird activity so biologists can plan studies. We determined hourly detections from singing males of 22 nongame bird species in ponderosa pine, quaking aspen, and grassland vegetation types in the Black Hills of South Dakota. Detections of 12 of 22 species differed among 1-hr intervals after sunrise. Detections of yellowrumped warblers, Townsend's solitaires, red-breasted nuthatches, western tanagers, and American robins decreased on count-episodes more than 4 hrs after sunrise. Detections of dusky flycatchers declined on count-episodes more than 3 hrs after sunrise and detections of black-capped chickadees were greatest during the first hour after sunrise and declined afterward. Detections of many other species from songs or calls decreased on count-episodes more than 5 hrs after sunrise. We recommend that bird counts in the Black Hills be completed within 4 hrs after sunrise so estimates of bird abundance are not affected by reduced singing among males.

Download or read book The Lumber Industry in the United States written by Library of Congress. Division of Bibliography and published by . This book was released on 1928 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin mining and Metallurgical Investigations written by Carnegie Institute of Technology and published by . This book was released on 1927 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cooperative Bulletin Mining and Metallurgical Investigations written by Carnegie Institute of Technology and published by . This book was released on 1926 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hay Quality written by Eral Owen Pollock and published by . This book was released on 1939 with total page 1200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A liberal supply of the highest quality of hay obtainable can generally be used to good advantage in the efficient production of livestock and livestock products.

Download or read book Miscellaneous Publication written by and published by . This book was released on 1940 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1927 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Timber Industries of Pennsylvania 1988 written by Eric H. Wharton and published by . This book was released on 1994 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The United States Department of Commerce Publications Catalog and Index Supplement written by United States. Dept. of Commerce and published by . This book was released on 1952 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of the Imperial Institute written by Imperial Institute (Great Britain) and published by . This book was released on 1926 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt: