Works by Otto Jespersen

Essentials of English Grammar (1933):

• source 1:  http://www.belgeler.com/blg/2oug/essential-of-english-grammar
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A Modern English Grammar On Historical Principles (1954):

• source 1: Internet Archive (이 자료를 어떻게 보라는 것인지, 아시는 분?)

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