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Correspondence
J. Heinrich Kraeft
其他書名
Kraeft (J. Heinrich) and Engelmann (George)
出版1878
URLhttp://books.google.com.hk/books?id=Q-cRnwEACAAJ&hl=&source=gbs_api
註釋Incoming correspondence to George Engelmann from J. Heinrich Kraeft, for 1878. The correspondence relates to a request for identification of American pines.