Original issue, US Army Field Manual, 120 pages, size is 8 1/4" x 10 3/4", stapled, three hole punched, dated 11 October 1977.  This is not a commercial copy or print but an original issue government print issued in 1977 and republished in 1992 to include changes 1 and 2.  This publication is titled - TM 5-6115-329-14, Operator, Organizational,Intermediate (Field) DS and GS and Depot Maintenance for Generator Sets,Gasoline Engine Driven, 0.5 KW (Less Engine) DOD Model MEP-014A, MEP-019A, MEP-024A.  Publication is designed to provide information  and instructions for repair and maintenance requirements and procedures for these generators.  Very well illustrated using detailed and clear line drawings.