TY - BOOK AU - Heiser,Charles B. TI - Seed to civilization: the story of food SN - 0716712644 PY - 1981/// CY - San Francisco: PB - W. H. Freeman, KW - Agriculture KW - History KW - Food KW - Food crops KW - Biology, Economic N1 - Includes index; Bibliography: pages 239 -245 ER -