TY - BOOK AU - Levine Ira N AU - Levine Ira N TI - Quantum chemistry SN - 9788120348172 (pbk) U1 - E:(CN1), L4;Q4;12-;18 PY - 2014/// CY - New Delhi PB - PHI KW - ariation method KW - Many electron atoms KW - Electron correlation methods N1 - Appendix 661-664p.; Bibliography 665-666p.; Index 679-700p ER -