00281nam a2200109Ia 4500008004100000041000800041082001900049100001300068245005100081260003100132300000800163211209s1977    xx            000 0 und d  aeng  a697.93 N77 ERN  aERNEST T  aAIR CONDITIONING INSTALLATION AND MAINTENANCE   bTARAPOREVAL AND SONSc1977  a160