11. Volume 46, Number 4: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1920 Format: Issue
12. Number 401: 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: 1920 Format: Issue
13. Number 400: 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: 1920 Format: Issue
14. Number 39: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
15. Number 40 - The Preparation of Marketable Vinegar: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
16. Number 41 - Mail Study Courses in Agriculture: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
17. Number 402: 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: 1920 Format: Issue
18. Number 30 - Phosphorus in Butter: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
19. Number 31 - A Study of Selections for the Size, Shape, and Color of Hens' Eggs: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
20. Number 32 - The Carbon Dioxide of the Soil Air: Memoir Collection: Core Historical Literature of Agriculture Publisher: Cornell University, Agricultural Experiment Station Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue