SEARS F. W., YOUNG H. D. & ZEMANSKY M. W.UNIVERSITY OF PHYSICS. NEW DELHI: .
SEARS FRANCIS W, YOUNG HUGH D and ZEMANSKY MARK W.UNIVERSITY OF PHYSICS. NEW DELHI: .
SEARS F. W., YOUNG H. D. and ZEMANSKY M. W.UNIVERSITY OF PHYSICS. NEW DELHI: .
SEARS FRANCIS W, YOUNG HUGH D and ZEMANSKY MARK W.NEW DELHI: . .