Male sterility and its importance in breeding heterosis varieties F. K. Van Der Kley OriginalPaper Pages: 117 - 124
Selection of living angelica-roots for volatile oil content J. W. de BruynG. ElzengaM. Keuls ReviewPaper Pages: 147 - 153
The showroom at the institute of agricultural plant breeding 1954 H. de Haan OriginalPaper Pages: 161 - 166