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- [2] MEETING ENVIRONMENTAL CHALLENGES OF THE 90S - A CASE-HISTORY ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1993, 206 : 32 - FERT
- [6] ALTIM READY FOR THE CHALLENGES OF THE 90S PAPERI JA PUU-PAPER AND TIMBER, 1989, 71 (08): : 881 - 883
- [10] Croatian ethnology and the challenges of the 90s OSTERREICHISCHE ZEITSCHRIFT FUR VOLKSKUNDE, 1999, 102 (04): : 510 - 515