War-Time rubber exploitation in tropical America Harry J. Fuller Semi-Popular Articles Pages: 311 - 337
Production and utilization of sugar beets H. S. OwensC. L. RasmussenW. D. Maclay Semi-Popular Articles Pages: 348 - 366
Canaigre—A desert source of tannin Arnold KrochmalSherman Paur Semi-Popular Articles Pages: 367 - 377
The sweet potato—Its origin and primitive storage practices J. S. Cooley Semi-Popular Articles Pages: 378 - 386
Hybrid vigor in cotton—Cytogenelic aspects and practical applications Harold D. LodenT. R. Richmond Technical Literature Review Pages: 387 - 408