TY - BOOK AU - Sigelman Carol K & Rider Elizabeth A. TI - Human Development: SN - 978-81-315-0822-0 U1 - 155 23 PY - 2003/// CY - New Delhi PB - Cengage learning N1 - 1.Understanding life-spam human development 2.Theories of human development 3.Genes, Environment, and development 4.Prenatal development and brith ER -