Welcher, F. J. (1975). Standard methods of chemical analysis (6th ed.). Robert E Krieger.
Chicago Stili AlıntıWelcher, Frank J. Standard Methods of Chemical Analysis. 6th ed. Hundtington, New York: Robert E Krieger, 1975.
MLA AlıntıWelcher, Frank J. Standard Methods of Chemical Analysis. 6th ed. Robert E Krieger, 1975.
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