Families with mental defectiveness heredity and natality. Means of prevention G. P. Frets OriginalPaper Pages: 297 - 330
The cytology of certain diploid, triploid and tetraploidAvena hybrids W. Ellison OriginalPaper Pages: 409 - 418
A comparison of the segregations of wildVersus normal or cultivated base in the grain of diploid, tetraploid and hexaploid species of oats E. T. Jones OriginalPaper Pages: 419 - 434
