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1Imeacht comhdhála LEABHARFoilsithe / Cruthaithe 1973“…University of Missouri--Rolla. Dept. of Civil Engineering…”
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2Imeacht comhdhála LEABHARFoilsithe / Cruthaithe 1971“…University of Missouri--Rolla. Dept. of Civil Engineering…”
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3Imeacht comhdhála LEABHARFoilsithe / Cruthaithe 1978“…University of Missouri--Rolla. Dept. of Civil Engineering…”
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4Imeacht comhdhála LEABHARFoilsithe / Cruthaithe 1981“…University of Missouri--Rolla. Dept. of Civil Engineering…”