Scientific, technical, health museums planetaria:   And the popularisation of science 
/ International Council of Museums 
 - Paris:   International Council of Museums,   1948 
 - 53p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>Universal Decimal Class. No.: </label>069:5/6(100)Lev