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3
-
Pollination directory for world crops / Eva Crane and Penelope Walker.
- International Bee Research Association,
- 1984.
- London :
-
Directory of important world honey sources / by Eva Crane, Penelope Walker and Rosemary Day.
- International Bee Research Association,
- 1984.
- London :
-
Technology and agricultural development in prewar Japan / Penelope Francks.
- 852
- Yale University Press,
- 1984.
- New Haven, CT [etc.] :