21. Crop production and environment Creator: Whyte, R. O. 1903- Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber Limited Publication Place: London, Date: 1946 Format: Book
22. Humus and the farmer, Creator: Sykes, Frank. Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber limited Publication Place: London, Date: 1946 Format: Book
23. Asparagus Creator: Kidner, Alfred William. Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber ltd. Publication Place: London, Date: 1947 Format: Book
24. The pruning of apples and pears by renewal methods Creator: Thompson, Clifford Ronald, 1909- Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber Publication Place: London, Date: 1949 Format: Book
25. 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
26. Ploughman's wisdom Creator: Carew, Norman. Collection: Core Historical Literature of Agriculture Publisher: Faber and Faber Publication Place: London, Date: 1949 Format: Book