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Article
Somaclonal variation as a source of disease resistance in potato.
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Year: 1991 Publisher: [S.l.] : [s.n.],

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Variety in contemporary English
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ISBN: 0044457375 Year: 1991 Publisher: London HarperCollins academic

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Book
The causes of molecular evolution
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ISBN: 1280760559 9786610760558 0198023359 0195357744 9780198023357 0195068831 9780195068832 Year: 1991 Publisher: New York Oxford University Press

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1. Protein Evolution. 2. DNA Evolution. 3. The Molecular Clock. 4. Selection in a Fluctuating Environment. 5. Strong-Selection, Weak-Mutation Approximations. 6. Neutral Allele Theories. 7. Selection Theories


Article
Observations préliminaires sur les fluctuations saisonnières des populations d'insectes ravageurs du mil stocké en grenier traditionnel au Sénégal.
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Year: 1991 Publisher: [S.l.] : [s.n.],

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Dissertation
Characterization of soil spatial variation using geostatistics = : Karakterisatie van de ruimtelijke variatie van bodems met behulp van geostatistiek.
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Year: 1991 Publisher: Gent : Rijksuniversiteit, Fakulteit van de Landbouwwetenschappen,

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Dissertation
Contribution à l'étude de facteurs de résistance d'espèces du genre Beta vis-à-vis de Cercospora beticola Sacc.
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Year: 1991 Publisher: Gembloux : Faculté des Sciences Agronomiques, UER de Phytopathologie,

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Book
Eléments de sociolinguistique
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ISBN: 2100002139 9782100002139 Year: 1991 Publisher: Paris : Dunod,

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Book
Para a analise de variaçao socio-semântica : estrato socio-profissional, sexo e local de produçao enquanto factores reguladores, em português contemporâneo, das formas de auto-referência e de orientaçao para o significado
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ISBN: 972667140X 9789726671404 Year: 1991 Volume: 13 Publisher: Lisboa : Portugal. Instituto Nacional de Investigaçao Cientifica, Centro de Linguistica da Universidade de Lisboa,

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The causes of molecular evolution
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ISBN: 0195068831 0195092716 Year: 1991 Volume: vol 2 Publisher: Oxford [etc.] : Oxford University Press,

Intraspecific variation in the social systems of wild vertebrates
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ISBN: 0521370248 Year: 1991 Publisher: Cambridge : Cambridge University Press,

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