US Army, Technical Manual, TM 9-4520-260-23P, UNIT AND DIRECT SUPPORT MAINTENANCE REPAIR PARTS AND SPECIAL TO LIST FOR HEATER, SPACE, DIESEL WITH BLOWER, 15,000 BTU/HR, 28VD, (MODEL UH48-E, TYPE IV), (NSN 4520-01-368-9594), Plus 500 free US military manua
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