TY - BOOK AU - Knapp, Loren W., AU - ED - ED - ED - ED - SN - 0-314-20110-6 SN - 2 PY - 1998///];copyright 199846 CY - Belmont, CA PB - Wadsworth Publishing Company KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Human biology N1 - Includes bibliographical references and index; 5 ER -