共 50 条
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- [23] ECONOMICS ON RAW-MATERIALS BY PLANNED CUTTING OF COMSUMPTION OF RAW-MATERIALS LEBENSMITTEL INDUSTRIE, 1975, 22 (10): : 449 - 450
- [24] THE FRGS SECONDARY RAW-MATERIALS INDUSTRY - PROBLEMS AND TRENDS IPW BERICHTE, 1981, 10 (05): : 32 - 39
- [25] PROBLEMS TO BE SOLVED BY GEOSCIENCES FOR SUPPLYING NATIONAL ECONOMY WITH RAW-MATERIALS ZEITSCHRIFT FUR ANGEWANDTE GEOLOGIE, 1972, 18 (05): : 193 - &
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- [28] RESEARCH ON THE ECONOMY OF DEPOSITS AND TECHNOLOGICAL PROBLEMS OF RAW-MATERIALS CARRIED OUT BY THE INSTITUTE-FOR-MINERAL-RAW-MATERIALS-AND-ECONOMY-OF-DEPOSITS ZEITSCHRIFT FUR ANGEWANDTE GEOLOGIE, 1982, 28 (12): : 569 - 571
- [29] SUPPLY OF RAW-MATERIALS AND AGREEMENT ON RAW-MATERIALS - CONSIDERATIONS OF GERMAN RAW-MATERIALS POLICY WITH REGARD TO 3RD WORLD EUROPA ARCHIV, 1975, 30 (14): : 461 - 470