00971nam a2200241 a 4500 120813s1974 njua 001 0 eng d 73006823 0132470721 0132470640 (pbk.) DLC DLC DLC BD-KhUET. 621.56 Langley, Billy C., 1931- Electric controls for refrigeration and air conditioning / B. C. Langley. Englewood Cliffs, N.J. : Prentice-Hall, 1974. xi, 195 p. : ill. ; 28 cm. Includes bibliographical references and index. Refrigeration and refrigerating machinery Automatic control. Air conditioning Control. Heating Control. 6991 6991 0 0 ddc 0 0 KUETCL KUETCL CART 1996-06-30 Favourite Book Centre, Dhaka. 1102.50 0 621.56 LAN 3010019498 2012-08-13 00:00:00 1 2012-08-13 BK