41. Volume 50, Number 2: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1985 Format: Issue
42. Volume 50, Number 3: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1985 Format: Issue
43. Volume 50, Number 4: Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1985 Format: Issue
44. Volume 50, Number 4, Supplement , Index : Rural sociology Collection: Core Historical Literature of Agriculture Publisher: Rural Sociological Society Publication Place: Columbia, Mo. Date: 1985 Format: Issue
45. Volume 1, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1867 Format: Issue
46. Volume 2, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1868 Format: Issue
47. Volume 4, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1872 Format: Issue
48. Volume 5, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1874 Format: Issue
49. Volume 6, Number 1: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1877 Format: Issue
50. Volume 7, Number 1-2: Transactions of the American Entomological Society Collection: Core Historical Literature of Agriculture Publisher: American Entomological Society Publication Place: Philadelphia Date: 1878 Format: Issue