21. Volume 2, Number 11: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1919 Format: Issue
22. Volume 2, Number 12: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1919 Format: Issue
23. Volume 3, Number 1: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
24. Volume 3, Number 2: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
25. Volume 3, Number 3: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
26. Volume 3, Number 4: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
27. Volume 3, Number 5: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
28. Volume 3, Number 6: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
29. Volume 3, Number 7: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
30. Volume 3, Number 8: Extension Service news Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture, Cornell University Publication Place: Ithaca, N.Y. Date: 1920 Format: Issue
