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1Cyhoeddwyd 1981Blacksburg : Virginia Polytechnic Institute and State University, 1981-v. ; 23 cm.“...Virginia Polytechnic Institute and State University...”
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2[Blacksburg, Va., Extension Division, Virginia Polytechnic Institute and State University]v. ill. 28 cm.“...Virginia Polytechnic Institute and State University...”
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3Cyhoeddwyd 1985[Dhaka : Bangladesh University of Engineering and Technology, 1985?]2 v. in 4 : ill., maps ; 29 cm.“...Virginia Polytechnic Institute and State University...”
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4Cyhoeddwyd 1996New York : Elsevier Science, c1996.368 p. : ill. (some col.) ; 24 cm.“...Virginia Polytechnic Institute and State University...”
