Graham, Frank Duncan, <br/><br/>
Audels answers on blue print reading for mechanics and builders, 
by F. D. Graham. 
 - New York,  T. Audel & co.  [c1941] 
 - 8 p. l., 352 p. incl. front., illus., diagrs.  17 cm. 
<br/><br/> Chapter 10, "A.I.E.E. standards: standard symbols for electrical equipment of buildings" (p. 167-170) has special t.-p. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Blueprints.
<br/><br/><label>Dewey Class. No.: </label>720.284  / GRH