51. Number 424 - Keep Dairy Herds Healthy: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
52. Number 278, Edition Revised - Diseases and Insects Affecting Vegetable Crops on Long Island: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
53. Number 281, Edition Revised - Fertilizer Recommendations for New York: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
54. Number 399 - Sheep Production: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
55. Number 400 - The New York State 1939 Agricultural Outlook: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
56. Number 401 - Factors Affecting Labor Incomes on New York Farms: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
57. Number 402 - Varieties of Vegetables for 1939: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
58. Number 403 - The Rock Garden: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
59. Number 404 - Strawberry Culture: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue
60. Number 405 - Fire Blight and Its Control: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1939 Format: Issue