An to zone
An Illustrated Dictionary of Medicine, Biology and Allied Sciences · 1907 · p. 4
(ant-o-zon'). An imaginary allotropic modification of oxygen, now known to be only hydrogen peroxid.
Bu kavram başka kaynaklarda da geçiyor
The American Dictionary and Cyclopedia (1910)
An Illustrated Encyclopaedic Medical Dictionary (1891)
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