Calder, Ritchie,  1906-1982 <br/><br/>
Men against the jungle / 
by Ritchie Calder 
 - London :  George Allen & Umwin,  1954 
 - 231 p. : ill. ; 23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technical assistance--Asia
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Asia, Southeastern--Social conditions