TY - BOOK AU - Letherman,K.M. TI - Automatic controls for heating and air conditioning: principles and applications SN - 0080232221 AV - TH7226 .L458 1981 U1 - 697 19 PY - 1981/// CY - Oxford, New York PB - Pergamon KW - Heating KW - Control KW - Air conditioning N1 - Includes index; Bibliography: p. 199-205 ER -