00316nam a2200109Ia 4500008004100000020001800041040002900059050002700088100003400115245002100149260003600170230222s9999||||xx |||||||||||||| ||und||  a81 219 0146 4  cChuka University Library  a BSL TA 403 bK58 1987  aKhurmi, R. S. and R. S. Sedha 0aMaterial science  aS. Chand & Co.bNew Delhic1987