An assessment of the contributions of Afrikaner, Hereford and Simmentaler in composite breed development in beef cattle by Skrypzeck, Heidi

Subjects: “…Beef cattle -- Breeding…”
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Studies on fertility and crossability of species in the genus Leucadendron by Rhode, Adele

Subjects: “…Proteaceae -- Breeding…”
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n Verhandeling oor die samewerking van 'n paar geslagsgekoppelde- en outosomale faktore by die hoender by Van Zyl, D. J. A

Subjects: “…Poultry -- Breeding…”
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n Studie oor die komponente van erflike variabiliteit as grondslag vir die teelverbetering van Suidafrikaanse Medicago sativa by Lamprecht, M. P.(Marthinus Philippus)

Subjects: “…Alfalfa -- Breeding…”
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Kunsmatige seleksie vir 'n metriese kenmerk van Drosophila by drie temperature by Poggenpoel, Daniel George

Subjects: “…Breeding…”
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Characterisation of original and modified forms of the Lr19 translocation of wheat by Prins, Renee

Subjects: “…Plant breeding…”
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Shoot tip culture as a potential tool in mutation breeding of the apple, Malus domestica cv Granny Smith by Pieterse, R. E.(Rachel Elizabeth)

Subjects: “…Mutation breeding…”
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Genetic variability in quantitative traits of cultivated strawberry by Human, J. P.(Jan Petrus)

Subjects: “…Plant breeding…”
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Optimising nitrogen fertilisation of kikuyu and kikuyu-ryegrass pastures by Viljoen, Charne

Subjects: “…Grasses -- Breeding…”
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Production of doubled haploids in the wheat cultivar SST55 by Lesch, Andries Jacobus Gerhardus

Subjects: “…Wheat -- Breeding…”
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The production of homozygous diploid lines by means of the haploid technique in South African barley cultivars by Littlejohn, Gail M.(Gail Margaret)

Subjects: “…Plant breeding…”
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Slaglamproduksie met die Merino as moederooi by Erasmus, Laurens Smith

Subjects: “…Sheep -- Breeding…”
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The use of blood metabolic concentrations as indicators of the metabolic and productive status in dairy cows

Subjects: “…Dairy cattle breeding…”
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n Inleidende studie tot 'n volsib resiproke herhalende seleksieprogram by mielies (Zea mays L.) by Pienaar, C. G.(Charl Gerhardus)

Subjects: “…Corn -- Breeding…”
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n Vergelykende studie van resiproke Ronde-x duikpitkruisings by mielies by Kuhn, H. C

Subjects: “…Corn -- Breeding…”
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n Vergelykende studie van topkruisingstoetsers by mielies by Lochner, G. P

Subjects: “…Corn -- Breeding…”
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Die kovariante van opbrengs as teeltkriteria by mielies by Laubscher, F. X.(Franciscus Xavierus),1906-1972

Subjects: “…Corn -- Breeding…”
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Methods of selection in poultry breeding by Randall, J. H.(John Hedley)

Subjects: “…Poultry -- Breeding…”
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Pitgrootte as 'n kovariant van opbrengs en styselinhoud by mielies by Acker, J. H. (Johannes Hendrik)

Subjects: “…Corn -- Breeding…”
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Contributions to the science of animal production with special reference to growth and reproductive performance by Joubert, Daniel Malan

Subjects: “…Animal breeding…”
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