000 00308nam a2200121Ia 4500
008 160710s1957 xx 000 0 und d
082 _aTRY
100 _aTRYTTERN,M.H. ED.
245 _aSCIENCE FILE
260 _bAMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE
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300 _a620
942 _2ddc
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999 _c34276
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