Kramer, Samuel Noah,  1897-1990. <br/><br/>
Cradle of civilization / 
by Samuel Noah Kramer and the editors of Time-Life Books. 
 - New York :  Time incorporated,  1967. 
 - 183 p. :  il.,retrs. ;  28 cm. 
<br/><br/> Incluye índice  Textos a dos columna