TY - BOOK TI - The variation of animals and plants under domestication VL - 1 UR - https://www.biodiversitylibrary.org/item/18362 PB - D. Appleton CY - New York PY - 1887 ET - 2d ed., rev. 4th thousand ... AU - Darwin, Charles, KW - Domestic animals KW - Plants, Cultivated KW - Variation (Biology) ER -