1. Using and managing soils Creator: Gustafson, Axel Ferdinand, 1880- Collection: Core Historical Literature of Agriculture Publisher: McGraw-Hill Book Co., Publication Place: New York : Date: 1948 Format: Book
2. Soil fertility and fertilizers Creator: Halligan, James Edward Collection: Core Historical Literature of Agriculture Publisher: Chemical Publishing Co., Publication Place: Easton, Pa. : Date: 1912 Format: Book