78344417
Dec 22, 2003
Jul 5, 2005
NEWSLETTER, PERIODICALS, BROCHURES, AND PAMPHLETS ON THE SUBJECT OF TESTING AND BALANCING OF HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC) SYSTEMS, A MANUAL OF NATIONAL STANDARDS FOR TESTING AND BALANCING OF HVAC SYSTEMS, AND A MANUAL OF TEST AND BALANCE PROCEDURES
Paper Goods and Printed MatterDIAGNOSTIC SERVICES, NAMELY, INDEPENDENT TESTING AND BALANCING OF HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC) SYSTEMS
Computer and Scientific