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1Published 1988“...HF 1416.6 .N5 .F892...”
Conference Proceeding Book -
2Published 1991“...HD 3858 .G721...”
Book -
3Published 1992“...HF 4030.5 .Z7 .A9 .C0411 a...”
Book -
4
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5Published 1993“...HC 603 .A938...”
Journal