共 50 条
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- [3] EMERGING PROBLEMS - ENERGY, ENVIRONMENTAL-PROTECTION AGRICULTURAL ENGINEERING, 1979, 60 (06): : 25 - 26
- [5] THE PROBLEMS AND CHALLENGES OF ENVIRONMENTAL-PROTECTION REGULATIONS TAPPI, 1980, 63 (04): : 103 - 104
- [6] PROBLEMS OF LAW AND ECONOMICS CONCERNING ENVIRONMENTAL-PROTECTION - REPORT ON ENVIRONMENTAL-PROTECTION LAW - CONGRESS OF THE "SOCIETY-OF-ENVIRONMENTAL-PROTECTION STAUB REINHALTUNG DER LUFT, 1979, 39 (08): : 289 - 291
- [7] RUSSIAN-MONGOLIAN COOPERATION IN PROTECTION OF LAKE BAIKAL ECOSYSTEM MIROVAYA EKONOMIKA I MEZHDUNARODNYE OTNOSHENIYA, 2019, 63 (03): : 68 - 75
- [8] PROBLEMS OF ENVIRONMENTAL-PROTECTION, IMPORTANT FACTOR IN COOPERATION SVENSK PAPPERSTIDNING-NORDISK CELLULOSA, 1974, 77 (12): : 417 - &
- [9] PROBLEMS OF ENVIRONMENTAL-PROTECTION IN THE USSR - ATTITUDES AND PRONOUNCEMENTS REVUE D ETUDES COMPARATIVES EST-OUEST, 1985, 16 (01): : 43 - 65