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Frederik Wellmann
A. MS.
CHEMESTRY (MS 1030-1048)
Definitions of "substance," "elementary substance," and "chemical compound." Valency and chemical graphs. Mendelyeev and the array of chemical elements.
Chemistry, Chemistry, curves and graphs of, Mendelyeev's periodic law, Substance, Valency chemical and logical
pp. 1-5
u
1038
n.p.
CHEMISTRY
no
