Syrocki, Boleslaus John,  1912- <br/><br/>
Finding out about ecology 
by B. John Syrocki 
 - Westchester, Ill  Benefic Press  [1974] 
 - 47 p.  col. illus  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Juvenile literature<br/>Ecology
<br/><br/><label>Dewey Class. No.: </label>301.31