Hidden wealth  mineral exploration techniques in tropical forest areas  proceedings of a symposium on mineral exploration techniques in tropical forest areas held in Caracas, Venezueia, November 19-23, 1977/ 
edited by D.J.C. Laming and A.K. Gibbs 
 - [Bangkok]  AGID  1982 
 - xi, 221p. 
 - Geosciences in international developments  report no.7 .
<br/><br/> At head of title : Association of Geoscientist ; for International Development 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemical prospecting