The relationship between specific gravity and percentage dry matter in potato tubers P. A. Schippers OriginalPaper Pages: 111 - 122
Area control of the green peach aphid on peach and the reduction of potato leaf roll virus D. M. PowellW. T. Mondor OriginalPaper Pages: 123 - 139
Heterosis for yield in hybrids betweenS. Tuberosum ssp.Tuberosum andtuberosum ssp.Andigena A. G. CubillosR. L. Plaisted OriginalPaper Pages: 143 - 150
To the membership of The Potato Association of America David Curwen News and Reviews Pages: 151 - 156