1. Soil fertility conference in the northern states, 1926 Creator: National Fertilizer Association (1925-1955) Collection: Core Historical Literature of Agriculture Publisher: s.n.], Publication Place: [Washington, D.C. : Date: 1926 Format: Book
2. Plant nutrition and crop production Creator: Russell, Edward J. (as Sir,) 1872-1965. Collection: Core Historical Literature of Agriculture Publisher: University of California Press, Publication Place: Berkeley, Calif. : Date: 1926 Format: Book
3. Fertilizers, their sources, manufacture, and uses Creator: Cave, Herbert. Collection: Core Historical Literature of Agriculture Publisher: Sir I. Pitman & sons, ltd. Publication Place: New York : Date: 1926 Format: Book