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1مؤتمر
المؤلفون: MARTIN, GP, IRVINE, KD, LAND, DD, TOMLINSON, MJ, AKROYD, TNW, FENTON, JM, CLARIDGE, PJ, COCHRANE, GH, VARLEY, IM, HILL, LP
المصدر: ICE Proceedings; Aug1973, Vol. 54 Issue 3, p487-494, 8p
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2مؤتمر
المؤلفون: AKROYD, TNW, SMITH, IM, BOORMAN, R
المصدر: ICE Proceedings; Mar1975, Vol. 59 Issue 1, p193, 1p