A Biannual Collection of Recent German Contributions (Exploration & Exploitation): Natural Resources and Development Vol.31 

 - Institute for Scientific Co-operation, Tubingen  1990 
 - p. 
<br/><br/>1. Contributions to the development of timber exploitation and the wood-processing industry in countries of the humid tropics. The case of ivory coast / Jurgen Pretzchs . 2. Observation on grouting pressure in rock grouting / Friedrich-Karl Ewert. 3. Solar hydrogen: systems- technology- cost / Carl- Jochen Winter. 4. Primary koalin deposits in the sierra of southern Ecuador/ Rolf Muff. 5. The nature conservation problems of a developing country, taking Bolivia as an example / Werner hanagarth. 6. Coal hydroliquefaction- A status report / Bernd O. Strolbel. 7. On the prospect of certain selected mineral raw material in high technology / Gerhard Lindermann. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water Resources<br/>WATER.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>German.