00309nam a2200085Ia 450000500170000008000110001724501650002826000090019358300210020220260716044120.0  aSerial  aIndigenous technology - boost for mining industry : Perspective talks with Dr. Neville Trotz, Head of the Institute of Applied Science and Technology in Guyana.  c1988  c3/18/16kSANDRAW