Heterocyclic Compounds  edited by Robert C. Elderfield. 

 - New York  John Wiley  1957 
 - vi, 744p. 23cm. 
<br/><br/>Contents:V.5 five membered heterocycles containing two hetero alams and their benzo derivatives. Elderfield, Robert C. 
<br/><br/><label>Dewey Class. No.: </label>54.59  / H59H