TY - BOOK AU - Levine Ira N TI - Quantum chemistry SN - 9788120348172 (pbk) U1 - E:219, L4;Q4;2-;6 Carc PY - 2014/// CY - New PB - Delhi PHI KW - Angular momentum KW - Perturbation theory KW - Electron-correlation methods N1 - Appendix 661-664p.; Bibliography 665-666p.; Answers to selected problems 667-678p.; Index 679-700p ER -