21. Volume 47, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1921 Format: Issue
22. Volume 47, Number 2: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1921 Format: Issue
23. Volume 47, Number 3: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1921 Format: Issue
24. Volume 47, Number 4: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1921 Format: Issue
25. Number 404: 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: 1921 Format: Issue
26. Number 405: 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: 1921 Format: Issue
27. Number 403: 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: 1921 Format: Issue
28. Number 407: 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: 1921 Format: Issue
29. Number 42 - Community Songs: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1921 Format: Issue
30. Number 43 - Directions for Cleaning and Care of Milking Machines: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1921 Format: Issue