TY - BOOK AU - Knudsen,Jens W. TI - Biological techniques; collecting, preserving, and illustrating plants and animals AV - QH318.5 .K6 U1 - 579 PY - 1966///] CY - New York PB - Harper & Row KW - Biological specimens KW - Collection and preservation KW - Local N1 - Includes bibliographies ER -