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The 1939 College Royal (15th), OAC Review, V.51, No. 6, Mar. 1939, P. 349-351, Con't on P. 396-397
OAC Review Index (University of Guelph)
出版1939
URLhttp://books.google.com.hk/books?id=hXQycgAACAAJ&hl=&source=gbs_api