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The aesthetic evolution of Melvin B. Tolson : a thematic study of his poetry

颁布单位：[Rice University] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[American, literature, Language, Language,, literature, and, linguistics, Tolson,, Melvin, B.]

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The effect of sodium tetradecyl sulphate on coagulation and endothelium.

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Blood, Coagulation, drug, effects.",, "Hemostasis, drug, effects.",, "Esophageal, and, Gastric, Varices, drug, therapy."]]

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Rock mechanics aspects of sequential grid mining

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Gold, mines, and, mining--Research--South, Africa",, "Rock, mechanics--South, Africa"]]

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The relationship between pollen rain, vegetation, climate, meteorological factors and land-use in the PWV, Transvaal

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Pollen--Dispersal--Climatic, factors--South, Africa--Transvaal",, "Palynology--South, Africa--Transvaal",, "Land, use--South, Africa--Transvaal",, "Vegetation, and, climate--South, Africa--Transvaal",, "Sampling, (Statistics)",, "Time-series, analysis"]]

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Marriage enrichment for Jewish couples

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Marriage, counselling--South, Africa",, "Marriage, customs, and, rites,, Jewish"]]

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The modelling of spelling processes : a developmental perspective

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Spelling,, Psychology, of",, "Spelling, ability",, "Language, and, languages--Orthography, and, spelling"]]

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Effect of diet on carnitine and lipid metabolism with particular reference to kwashiorkor

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Kwashiorkor",, "Nutritional, and, metabolic, diseases",, "Nutrition, Disorders",, "Carnitine",, "Lipids--metabolism"]]

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Raster to vector conversion in a local, exact and near optimal manner

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Vector, processing, (Computer, science)",, "Vector, fields",, "Algorithms",, "Computer, algorithms",, "Geographic, information, systems",, "Polymorphic, projection, (Cartography)",, "Information, storage, and, retrieval, systems--Geography"]]

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The design and development of a light-weight aluminium semi-trailer

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Trucks--Materials",, "Trucks--Design, and, construction",, "Aluminum",, "Trucks--Weight"]]

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A design study of a scale model bearingless helicopter rotor system using composite materials

颁布单位：[University of the Witwatersrand] | 颁布时间：1991 | 实施时间：1991 | 学科分类：[["Rotors, (helicopters)--Design, and, construction"]]

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