Koper, Enrico <br/><br/>
The interstellar medium in M 31 and other nearby galaxies 

 - Leiden:  Sterrewatcht  1993 
 - viii, 142p. :   il; 24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrofísica y Astronomía Descriptiva<br/>Material interestelar<br/>interstellar matter<br/>galaxias cercanas<br/>nearby galaxies<br/>M 31