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Traps for the Japanese Beetle and how to Use Them
David Leroy Yarnell
Fletcher Pearre Veitch
Frederick William Metzger
L. J. Palmer
O. K. Hedden
Walter Ernest Fleming
William Bonar Bell
Edward Alexander Preble
其他書名
Supplement
出版
U.S. Department of Agriculture
, 1934
URL
http://books.google.com.hk/books?id=EwhF9B-WDAEC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
This study had its origin in the desire of a number of agencies interested in the welfare of the people of the Southern Appalachians for a comprehensive survey of present economic and social conditions and tendencies in that region. Such a survey, it was felt was essential to provide the various agencies with a basis for planning their programs.
