Plant breeding: Past achievements and expectations for the future Donald N. Duvick OriginalPaper Pages: 289 - 297
International prospects for cooperation in crop research Donald L. PlucknettNigel J. H. Smith OriginalPaper Pages: 298 - 309
Mosses, Liverworts, and Hornworts Screened for Antitumor Agents Richard W. SpjutMatthew SuffnessDaniel H. Norris OriginalPaper Pages: 310 - 338
Ethnobotanical observations from cabecar and guaymĂ settlements in central america Donald L. Hazlett OriginalPaper Pages: 339 - 352
Patterns of morphological variation insesamum indicum Dorothea BedigianC. A. SmythJack R. Harlan OriginalPaper Pages: 353 - 365
Rubber content in diploid guayuleParthenium argentatum: chromosomes, rubber variation, and implications for economic use John M. MillerRalph A. Backhaus OriginalPaper Pages: 366 - 374
Chemical composition of the water fern,salvinia molesta, and its potential as feed source for ruminants Mathew MoozhiyilJosef Pallauf OriginalPaper Pages: 375 - 383