1. Our natural resources and their conservation Creator: Parkins, A. E. 1879-1940 Collection: Core Historical Literature of Agriculture Publisher: Chapman & Hall, Limited, Publication Place: London : Date: 1936 Format: Book
2. Income in agriculture, 1929-1935 Creator: Martin, Robert F. Collection: Core Historical Literature of Agriculture Publisher: National Industrial Conference Board, Inc., Publication Place: New York : Date: 1936 Format: Book