00709cam a2200193 7i4500 0000001221 20070403090000.0 19990603143700.0 xx 00010 eng 0835902048 TH7687.5 .L36 1980 Langley Air conditioning and refrigeration troubleshooting handbook Billy C. Langley. Reston, Va.: Reston Pub Co., 1980. xi,414p.: ill.; 24 cm. Includes index Air conditioning -- Equipment and supplies -- Maintenance and repair Refrigeration and refrigerating machinery -- Maintenance and repair 0000007191 Book Reference HQ Library