共 50 条
- [41] TONGBERG CO, 1954, PETROLEUM TIMES, V58, P291
- [42] VANPESKI AJ, 1940, Patent No. 391683
- [43] VANUITERT LG, 1953, J AM CHEM SOC, V75, P2739
- [44] WILKINS JP, 1953, Patent No. 2659711
- [45] WILKINSON G, 1954, J AM CHEM SOC, V74, P6148
- [46] 1953, Patent No. 2645629
- [47] 1956, Patent No. 2753276
- [48] 1953, Patent No. 2661345
- [49] 1937, Patent No. 2086775
- [50] 1928, Patent No. 287192