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- [1] TRACE ANALYSIS OF IRON, NICKEL, COPPER AND VANADIUM IN PETROLEUM-PRODUCTS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1973, (AUG26): : 22 - 22
- [4] ANALYSIS OF TRACE-METALS IN PETROLEUM CRUDES .1. TRACE ANALYSIS OF VANADIUM AND TITANIUM IN CRUDE PETROLEUM OF NORTH GUJARAT INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1979, 18 (02): : 148 - 150
- [5] VANADIUM, NICKEL, AND IRON TRACE METALS IN CRUDE OILS OF WESTERN CANADA AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS, 1954, 38 (12): : 2537 - 2554