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161
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162
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163Published 1976Government Document Book
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164Published 1969“...Information report (Pennsylvania State University. Institute for Research on Land and Water...”
Conference Proceeding Book -
165
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166
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167Book
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168
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169
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170
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171
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172
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173Published 1975Conference Proceeding Book
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174by Roscoe, Edwin Scott“...Engineering research bulletin (Pennsylvania State University. College of Engineering) ;...”
Published 1958
Book -
175Published 1976Government Document Book
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176
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177
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178Published 1972Subjects: “...Pennsylvania State University Students....”
Book -
179
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180