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1Published 1984“...HD 30.23 .I615...”
Conference Proceeding Book -
2Published 1977“...HC 663 .S471...”
Conference Proceeding Book -
3Published 1980“...HV 5825 .E84...”
Government Document Conference Proceeding Book -
4Published 1985“...HE 147.5 .I61 2nd...”
Conference Proceeding Book -
5Published 1986“...HM 511 .A652 1986...”
Conference Proceeding Book -
6