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• Experiente porumbul dublu hibrid 1960
• Paris
• Worthen, Edmund L Farm soils their management and fertilization
• Cultura porumbului
• Selke, W Die dungung
• Kudrvtseva Deutch
• Vassilyer, V.A English phonetics a theoretical course
• Pontriaguine, L Equations differenticlles ordinaires
• Probleme des aufbaues einer progressiren landwirtechaft in den entwiklung sandern
• Baker, H.G The genetics of colonizing species
• Hutner, S.H Biochemistry and physiology of protozca. Vol 2
• Lwoff, Anddre Biochemistry and physiology of protozca. Vol 1
• Jacks, G.V The Journal of soil science. Vol 1
• Jacks, G.V The Jourrnal of soil science. Vol 2
• Jacks, G.V The Journal of soil science. Vol 3
• Jacks, G.V The Journal of soil science. Vol 4
• Jacks, G.V The Journal of soil science. Vol. 5, Part 1
• Jacks, G.V The Journal of soil science. Vol. 5, Part 2
• Jacks, G.V The Journal of soil science. Vol. 6, Part 1
• Jacks, G.V The Journal of soil science. Vol. 6, Part 2