KHURMI R.S.\ S. R., . (1989). MATERIAL SCIENCE. : S. CHAND & COMPANY.
KHURMI R.S.\ SEDHA R.S, . 1989. MATERIAL SCIENCE. : S. CHAND & COMPANY.
KHURMI R.S.\ SEDHA R.S, . MATERIAL SCIENCE. : S. CHAND & COMPANY. 1989.