PRACTICAL test instruments you can build 
edited by Wayne Green 
 - 1st.ed 
 - Blue Ridge Summit, Pa.,  G/L Tab Books  c[1974] 
 - 192 p.:  illus.;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0704201496 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic instruments