81. Soil fertility diagnosis and control for field, garden, and greenhouse soils Creator: Spurway, Charles Henry. Collection: Core Historical Literature of Agriculture Publisher: Edwards Brothers, Inc., Publication Place: [Ann Arbor, Mich. : Date: 1948 Format: Book
82. Garden soils, their use and conservation Creator: Beaumont, Arthur Bishop, 1887- Collection: Core Historical Literature of Agriculture Publisher: Orange Judd Pub. Co., Publication Place: New York : Date: 1948 Format: Book
83. 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
84. 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
85. 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
86. 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
87. 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
88. Ploughman's wisdom Creator: Carew, Norman. Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber Publication Place: London, Date: 1949 Format: Book