Valvular
Explanation of Terms Used in Entomology · 1906 · p. 3
: when two parts join so as to form a valve between them.
Bu kavram başka kaynaklarda da geçiyor
The American Illustrated Medical Dictionary (1913)
The American Dictionary and Cyclopedia (1910)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopedic Medical Dictionary (1894)
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