51. Silvicultural systems Creator: Troup, Robert Scott, 1874-1939. Collection: Core Historical Literature of Agriculture Publisher: Clarendon Press, Publication Place: Oxford : Date: 1928 Format: Book
52. Wheat flour and diet Creator: Swanson, C. O. b. 1869. Collection: Core Historical Literature of Agriculture Publisher: Macmillan, Publication Place: New York : Date: 1928 Format: Book