1. Plant hybridization before Mendel Creator: Roberts, H. F. 1870- Collection: Core Historical Literature of Agriculture Publisher: Princeton University Press, Publication Place: Princeton : Date: 1929 Format: Book
2. The beginnings of plant hybridization Creator: Zirkle, Conway, 1895- Collection: Core Historical Literature of Agriculture Publisher: H. Milford, Oxford University Press, Publication Place: London : Date: 1935 Format: Book