1. Soils: their formation and classification. Creator: Thompson, Louis M. Collection: Core Historical Literature of Agriculture Publisher: Wm. C. Brown, Publication Place: Dubuque, Iowa : Date: 1949 Format: Book
2. Soils, their physics and chemistry Creator: Puri, Amar Nath. Collection: Core Historical Literature of Agriculture Publisher: Reinhold Pub. Corp., Publication Place: New York : Date: 1949 Format: Book
3. The ABC of soils Creator: Joffe, Jacob Samuel, 1887- Collection: Core Historical Literature of Agriculture Publisher: Pedology Publications, Publication Place: New Brunswick, N.J. : Date: 1949 Format: Book
4. The organic method on the farm Creator: Rodale, J. I. 1898-1971 Collection: Core Historical Literature of Agriculture Publisher: The Organic Farmer, Publication Place: Emmaus, Pa. : Date: 1949 Format: Book
5. Crisscross trails: narrative of a soil surveyor Creator: Lapham, Macy Harvey, 1874- Collection: Core Historical Literature of Agriculture Publisher: W. E. Berg, Publication Place: Berkeley, Calif. : Date: 1949 Format: Book
6. Ploughman's wisdom Creator: Carew, Norman. Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber Publication Place: London, Date: 1949 Format: Book