Hetzel, Michael L. <br/><br/>
Relay circuits for psychology 
[by] Michael L. Hetzel [and] Carol W. Hetzel. 
 - New York,  Appleton-Century-Crofts  [1969] 
 - ix, 163 p.  illus. 
 - Century psychology series .
<br/><br/><label>ISBN: </label>0390438103 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychological apparatus.<br/>Electric relays.
<br/><br/><label>Dewey Class. No.: </label>150.28  / HET.R