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[[air mail envelope]] [[rubber stamp]] Yung Sun Kang Department of Zoology Seoul National University Seoul, Korea [[/rubber stamp]] Dr. Helmut K. Buechner Head, Office of Ecology Museum of Natural History Smithsonian Institution Washington. D.C. 20560 U. S. A. [[image - Korean AirMail Postage Stamp with oriental characters, temple and airplane - 37.00]] [[image - cancellation stamp - Seoul? Korea 26 XI 66 19 x 12 [[/air mail envelope]]