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TRANE AIR CONDITIONING MANUAL

HVAC PUMP HANBOOK JAMES RISHEL

MODERN HYDRONIC HEATING 2D ADDITION JOHN SIEGENTHALER

PRACTICAL ELECTRICITY PART 2 , 1925 TERRELL CROFT

" " WIRING OF FINISHED BUILDINGS 1915 TERRELL CROFT

(interesting that is says in the book that in 1915 only 8% of buildings in the US had electricity)

AUDEL PLUMBERS AND STEAM FITTERS GUIDE 1938

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