1.

図書
図書
1. The system of English grammar (hardcover ; papercover)
[by] Ralph B. Long & Dorothy R. Long
出版情報: Glenview, Ill. : Scott, Foresman, c1971
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2.

図書
図書
2. The sentence and its parts : a grammar of contemporary English
Ralph B. Long
出版情報: Chicago : University of Chicago Press, 1961
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