Brown, William G.,  1938- <br/><br/>
On the enumeration of non-planar maps/ 
by William G. Brown. 
 - Providence, R.I.:  American Mathematical Society,  1966. 
 - 42 p.:  illus.,  26 cm. 
 - Memoirs of the American Mathematical Society;  no. 65. .
<br/><br/> Cover title. 
<br/><br/>Bibliography: p. 42. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Conformal mapping.