 | 1932 - 820 páginas
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 | 1931 - 884 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | 1931 - 1272 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | 1920 - 440 páginas
...the best causes in the universe. 2 US Collecting Permits for 1920. We are in receipt of a letter from the Bureau of Biological Survey of the United States Department of Agriculture containing information as to the Biological Survey Bureau's construction of the Regulations governing... | |
 | 1934 - 792 páginas
...is suggested that the farmer get in touch with the county agricultural agent or a representative of the Bureau of Biological Survey of the United States Department of Agriculture whenever these become troublesome. For sale by the Superintendent of Documents, Washington, DC l"rtce... | |
 | Albert Shaw - 1922 - 718 páginas
[ Lo sentimos, el contenido de esta página está restringido. ] | |
 | 1910 - 532 páginas
...the ground in the fields or open woods where they have been feeding on grasshoppers or other insects. The Bureau of Biological Survey of the United States Department of Agriculture examined carefully the contents of 394 Flickers' stomachs taken in 28 states, including Canada. It... | |
 | University of Missouri--Columbia. Agricultural Experiment Station - 1928 - 528 páginas
...There are various formulas recommended. Most of these, however, have been developed and recommended by the Bureau of Biological Survey of the United States Department of Agriculture. The following preparation has met the requirements for use as a permanent poison bait in stations or... | |
 | University of Missouri--Columbia. Agricultural Experiment Station - 1921 - 552 páginas
...There are various formulas recommended. Most of these, however, have been developed and recommended by the Bureau of Biological Survey of the United States Department of Agriculture. The following preparation has met the requirements for use as a permanent poison bait in stations or... | |
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Executive order, administered by the Bureau of Biological Survey of the United States Department of Agriculture... 
