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61Published 1996“...HD 5764 .A6 .O58...”
Book -
62
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63
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64Published 1997“...HC 290.782 .N384...”
Book -
65
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66Published 1999“...HC 430.5 .P769...”
Book -
67Published 1992“...HQ 1662 .W8722...”
Conference Proceeding Book -
68Published 1987“...HT 1092 .B862...”
Book