共 31 条
- [1] AMANN R, 1977, TECHNOLOGICAL LEVEL, pCH3
- [2] AMES E, 1963, ECON J, V75, P13
- [3] AYLON J, 1980, TECHNICAL INNOVATION
- [4] BAUMAN HG, 1973, DIFFUSION BASIC OXYG, P6
- [5] *CTR IND SID, SID ARG
- [6] *EC COMM EUR, WORLD STEEL MARK
- [7] *EC COMM EUR, 1979, STRUCT CHANG IR STEE, P62
- [8] *EUR COAL STEEL CO, INV COMM COALM IR ST
- [9] *FTC, 1977, US STEEL IND INT REV
- [10] GOLD B, 1980, EVALUATING TECHNOLOG, P25