Issued May 23, 1911U. S. DEPARTMENT OF AGRICULTURE.FARMERS' BULLETIN 447.BEES.BYE. F. PHILLIPS, Ph. D.,In Charge of Bee Culture, Bureau of Entomology.WASHINGTON:GOVERNMENT PRINTING OFFICE.1911.
Язык
Английский
Год издания
2015-03-21
Темы
Bees; Bee culture; Hymenoptera