共 50 条
- [1] COBALT - THE VALUABLE RAW-MATERIAL FOR PERMANENT-MAGNETS F&M-FEINWERKTECHNIK & MESSTECHNIK, 1980, 88 (04): : 157 - 162
- [2] LIPID-HYDROCARBON EXTRACT - ECONOMICALLY VALUABLE RAW-MATERIAL ZEITSCHRIFT FUR CHEMIE, 1978, 18 (03): : 115 - 115
- [6] ANTHRAQUINONE-VALUABLE RAW-MATERIAL FOR DYE-STUFF SYNTHESIS PRZEMYSL CHEMICZNY, 1991, 70 (05): : 199 - 200
- [7] INDUSTRIAL WOOD - MASS ASSORTMENT, COUPLING PRODUCT OR VALUABLE RAW-MATERIAL HOLZFORSCHUNG UND HOLZVERWERTUNG, 1979, 31 (01): : 5 - 7