41. Volume 14, Number 2: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1949 Format: Issue
42. Volume 14, Number 3: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1949 Format: Issue
43. Volume 14, Number 4: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1949 Format: Issue
44. Volume 75, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1949 Format: Issue
45. Volume 75, Number 2: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1949 Format: Issue
46. Volume 75, Number 3-4: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1949 Format: Issue
47. Volume 42, Number 1: Annals of the Entomological Society of America Collection: Core Historical Literature of Agriculture Publisher: Entomological Society of America Publication Place: Lanham, Md. Date: 1949 Format: Issue
48. Volume 42, Number 2: Annals of the Entomological Society of America Collection: Core Historical Literature of Agriculture Publisher: Entomological Society of America Publication Place: Lanham, Md. Date: 1949 Format: Issue
49. Volume 42, Number 3: Annals of the Entomological Society of America Collection: Core Historical Literature of Agriculture Publisher: Entomological Society of America Publication Place: Lanham, Md. Date: 1949 Format: Issue
50. Volume 42, Number 4: Annals of the Entomological Society of America Collection: Core Historical Literature of Agriculture Publisher: Entomological Society of America Publication Place: Lanham, Md. Date: 1949 Format: Issue