TY - GEN AU - Fisher Helen E TI - Why we love : : the nature and chemistry of romantic love / SN - 0805069135 AV - BF575.L8 U1 - 152.4/1 PY - 2004/// CY - New York : PB - H. Holt, KW - Love KW - Physiological aspects KW - Human evolution KW - Sex KW - Sex differences N1 - Includes bibliographical references (p. 257-286) and index ER -