Penney, William George. <br/><br/>
The quantum theory of valency / 
by W. G. Penney. 
 - London:  Methuen & co. ltd.  1935 . 
 - vii, 95 p. :  ill. ;  17.5 cm. 
 - Methuen's monographs on chemical subjects. .
<br/><br/>"References": p. 93-94. & Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quantum theory.<br/>Valence (Theoretical chemistry)
<br/><br/><label>Dewey Class. No.: </label>530.12  / PEQ 1935