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1Published 1992“...HE 297.8 .I61...”
Conference Proceeding Book -
2Published 1993“...HD 3616 .P253 .S471 1993...”
Conference Proceeding Book -
3Published 1994“...HD 8932 .N277...”
Conference Proceeding Book -
4Published 1988“...HC 683.5 .Z9 .E5 .C758...”
Conference Proceeding Journal