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1by Lensen, Geert Jan, 1921-“...Dept. of Scientific and Industrial Research,...”
Published 1977
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2
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3Published 1976“...Dept. of Scientific and Industrial Research,...”
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4Published 1979“...Dept. of Scientific and Industrial Research,...”
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5by Herzer, R. H.“...New Zealand Dept. of Scientific and Industrial Research,...”
Published 1981
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