Furman, H. N. (1975). Standard methods of chemical analysis (6th ed.). Robert E.Krieger publishing company.
Dyfyniad Arddull ChicagoFurman, Howell N. Standard Methods of Chemical Analysis. 6th ed. New York: Robert E.Krieger publishing company, 1975.
Dyfyniad MLAFurman, Howell N. Standard Methods of Chemical Analysis. 6th ed. Robert E.Krieger publishing company, 1975.
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