Azoic
Chandler's Encyclopedia · 1898 · p. 9
Strata in which no traces of life have been discovered.
Bu kavram başka kaynaklarda da geçiyor
The American Illustrated Medical Dictionary (1913)
The American Dictionary and Cyclopedia (1910)
Cassell's Eneyclopedia of General Information (1910)
Chamber's Twientieth Century Dictionary (1908)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
The Student's Medical Dictionary (1896)
An Illustrated Encyclopaedic Medical Dictionary (1891)
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
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