API STD 661 DATA SHEET-2013 Air-Cooled Heat Exchangers for General Refinery Service - Mechanical Equipment Data Sheet (Seventh Edition * Includes Excel Spreadsheet)
API STD 661 DATA SHEET-2006 Air-Cooled Heat Exchangers for General Refinery Service - Mechanical Equipment Data Sheet (Sixth Edition; Includes Excel Spreadsheet)
API STD 661-1978 Air-Cooled Heat Exchangers for General Refinery Service (Second Edition)
API STD 661-1997 Air-Cooled Heat Exchangers for General Refinery Services (Fourth Edition)
API STD 661-2002 Air-Cooled Heat Exchangers for General Refinery Service (Fifth Edition; ISO 13706: 2000/ISO 13706 Adoption)
API STD 661-2006 Air-Cooled Heat Exchangers for General Refinery Service (Sixth Edition)
API STD 661-1992 Air-Cooled Heat Exchangers for General Refinery Service
API STD 661-2013 Petroleum@ Petrochemical@ and Natural Gas Industries - Air-cooled Heat Exchangers (SEVENTH EDITION)