Trubachyov, Oleg, editor (1974), “*<span class="searchmatch">azь</span>”, in Этимологический словарь славянских языков [Etymological dictionary of <span class="searchmatch">Slavic</span> languages] (in Russian), numbers...
From <span class="searchmatch">Proto</span>-Balto-<span class="searchmatch">Slavic</span> *āˀźina, from <span class="searchmatch">Proto</span>-Indo-European *h₂eǵ-í-no-s, from *h₂eǵ- (“goat”). Equivalent to *<span class="searchmatch">azь</span> (“goat”) + *-ьno. Baltic cognates include...
<span class="searchmatch">Proto</span>-Balto-<span class="searchmatch">Slavic</span>: *āˀźis Latvian: āzis Lithuanian: ožỹs Old Prussian: wosux (vōzuks) <span class="searchmatch">Proto</span>-<span class="searchmatch">Slavic</span>: *<span class="searchmatch">azь</span> (see there for further descendants) → <span class="searchmatch">Proto</span>-Finnic:...
in languages that do not (e.g. Russian). *<span class="searchmatch">azь</span>, *azьno *kozьlъ (“he-goat”) *koža (“skin; leather”) East <span class="searchmatch">Slavic</span>: Belarusian: каза́ (kazá) Russian: коза́...