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5487 documents found.
Published:
| Burghout, F.
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| Creswell, J.S. Dunlap, D.F. & Green, J.A.
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| Przyborowski, J. & Wilenski, H.
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| Pearsall, H.H.
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| Staal, E.C.J.
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| Bower, G.S.