541.28 ATKINS, P . W . MOLECULAR QUANTUM MECHANICS / / P . W . ATKINS & R . S . FRIEDMAN. - 3RD. - NEW DELHI: : OXFORD UNIVERSITY PRESS,, 1997 (RPT 2001 ). xvii , 545 P.. : PAPER BACK 0195667514 : 345/- * QUANTUM CHEMISTRY. QUANTUM MECHANICS. * FRIEDMAN, R . S . * Title