PENTAVALENT
An Illustrated Encyclopedic Medical Dictionary · 1894 · p. 10
adj. Pe2nt-a2v'a2l-e2nt. See QUINQUIVALENT. [s. 234]
Bu kavram başka kaynaklarda da geçiyor
A French-English Dictionary for Chemists (1921)
The American Illustrated Medical Dictionary (1913)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
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