1974 Heterosis in plant breeding. Proceedings of the 7th Congress
available at ETH Zurich library: website link here
available at the library of IPK Gatersleben. To request a .pdf of a single article, contact This email address is being protected from spambots. You need JavaScript enabled to view it.
Budapest, 24-29 June 1974, ed.: Andor Jánossy, F.G.H.Lupton