11. Volume 67, Number 1-2: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1941 Format: Issue
12. Volume 67, Number 3: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1941 Format: Issue
13. Volume 67, Number 4: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1941 Format: Issue
14. Volume 15, Number 1: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1941 Format: Issue
15. Volume 15, Index : Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1941 Format: Issue
16. Volume 15, Number 2: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1941 Format: Issue
17. Volume 15, Number 3: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1941 Format: Issue
18. Volume 15, Number 4: Agricultural history Collection: Core Historical Literature of Agriculture Publisher: Agricultural History Society Publication Place: Fargo, N.D. Date: 1941 Format: Issue
19. Number 766: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1941 Format: Issue
20. Number 767: Bulletin Collection: Core Historical Literature of Agriculture Publisher: Cornell University Agricultural Experiment Station, New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1941 Format: Issue