71. Volume 9, Number 1: Journal of farm economics Collection: Core Historical Literature of Agriculture Publisher: American Farm Economic Association Publication Place: Menasha, Wis. Date: 1927 Format: Issue
72. Volume 9, Number 2: Journal of farm economics Collection: Core Historical Literature of Agriculture Publisher: American Farm Economic Association Publication Place: Menasha, Wis. Date: 1927 Format: Issue
73. Volume 9, Number 3: Journal of farm economics Collection: Core Historical Literature of Agriculture Publisher: American Farm Economic Association Publication Place: Menasha, Wis. Date: 1927 Format: Issue
74. Volume 9, Number 4: Journal of farm economics Collection: Core Historical Literature of Agriculture Publisher: American Farm Economic Association Publication Place: Menasha, Wis. Date: 1927 Format: Issue