TY - BOOK ED - Scientific American TI - 39 steps to biology: with introductions by Garrett Hardin, comp AV - QH302 .H38 U1 - 574/.08 PY - 1968///] CY - San Francisco PB - W. H. Freeman KW - Biology KW - Addresses, essays, lectures KW - Local N1 - Includes index; Biographical notes and bliographies: p. 329-340 ER -