Isoboles, a graphic representation of synergism in pesticides P. M. L. Tammes OriginalPaper Pages: 73 - 80
Chromatographic purification of plant viruses of cellulose columns with polyethylene glycol containing solutions as solvents J. H. VenekampW. H. M. Mosch OriginalPaper Pages: 85 - 89
A technique for preserving leaf samples with cellophane tape J. Schreurs Short Communication Pages: 90 - 91