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Dickerson Richard E, Gray Harry B & Haight Gilbert P. (1970). Chemical principles. : .
Dickerson Richard E, Gray Harry B and Haight Gilbert P. 1970. Chemical principles. : .
Dickerson Richard E, Gray Harry B and Haight Gilbert P. (1970). Chemical principles. : .
Dickerson Richard E, Gray Harry B and Haight Gilbert P. Chemical principles. : . 1970.