61. Number 428 - The Boron-Deficiency Disease of Apple: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
62. Number 429 - New Lawns: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
63. Number 430 - Lawn Maintenance: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
64. Number 431 - The Control of Weeds in Lawns: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
65. Number 432 - Controlling Weeds with Chlorates: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
66. Number 433 - Handling Package Bees: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
67. Number 434 - Honeybees for Pollination: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
68. Number 435 - Potato Dust and Spray Recommendations for Long Island, 1940: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
69. Number 436 - Spring Management of the Apiary: Cornell extension bulletin Collection: Core Historical Literature of Agriculture Publisher: New York State College of Agriculture Publication Place: Ithaca, N.Y. Date: 1940 Format: Issue
70. Number 437 - Dutch Elm Disease 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: 1940 Format: Issue