Races of maize in Mexico. Their origin, characteristics an distributions, by E. J. Wellhausen, L. M. Roberts and E. Hernandez
Races of maize in Mexico. Their origin, characteristics an distributions, by E. J. Wellhausen, L. M. Roberts and E. Hernandez - Harvard : The Busey Institution of Harvard University, 1952. - 223 p. ; 21 cm.