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3Published 1976“...HQ 1865.5 .W872 s...”
Conference Proceeding Book -
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12Published 1980“...HQ 1106 .U58 1979...”
Conference Proceeding Book -
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17Published 1977“...HQ 1743 .W872...”
Book -
18Published 1976“...HQ 1106 .U58 1975...”
Conference Proceeding Book -
19Published 1974“...HD 6055 .S678...”
Book -
20