1. Forward prices for agriculture Creator: Johnson, D. Gale 1916- Collection: Core Historical Literature of Agriculture Publisher: Univ. of Chicago Press, Publication Place: Chicago : Date: 1947 Format: Book
2. Trade and agriculture: a study of inconsistent policies. Creator: Johnson, D. Gale 1916- Collection: Core Historical Literature of Agriculture Publisher: Wiley, Publication Place: New York : Date: 1950 Format: Book