Perek, L. <br/><br/>
Catalogue of galactic planetary nebulae 
L. Perek                                                   
 - Prague  Czechoslovakia Academy of Sciences  1967 
 - 276p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Catalogue-Planetary nebulae<br/>Planetary Nebulae-catalogue
<br/><br/><label>Universal Decimal Class. No.: </label>083.8:524.5  / PER