1. Book review

   • Robert Kral
   • Abraham D. Krikorian
   • Dennis Swanger

   BookReview Pages: 253 - 253

2. Hybridization of maize and teosinte, in mexico and guatemala and the improvement of maize

   • H. G. Wllkes

   OriginalPaper Pages: 254 - 293

3. A multiple-entry key system using edge-punched cards to identify cultivars of potato

   • J. P. Moss
   • E. Brown

   OriginalPaper Pages: 294 - 297

4. Plants of common use in Paraguayan folk medicine for regulating fertility

   • P. Arenas
   • R. Azorero

   OriginalPaper Pages: 298 - 300

5. Plants used as means of abortion, contraception, sterilization and ecundation by Paraguayan indigenous people

   • P. Arenas
   • R. Moreno Azorero

   OriginalPaper Pages: 302 - 306

6. Cardiotonic glycosides from the latex of naucleopsis mello-barretoi, a dart-poison plant from North-West Brazil

   • Norman G. Bisset
   • Peter J. Hylands

   OriginalPaper Pages: 307 - 311

7. Onion farming in Ghana

   • Suppiah Sinnadurai
   • John F. Abu

   OriginalPaper Pages: 312 - 314

8. The avocados, a Synopsis of the genusPersea, subg.Persea

   • Louis O. Williams

   OriginalPaper Pages: 315 - 320

9. The Cultivation of Melegueta Pepper

   • J. M. Lock
   • J. B. Hall
   • D. K. Abbiw

   OriginalPaper Pages: 321 - 330

10. Tropical Plants with Sweetening Properties: Physiological and Agronomic Problems of Protected Cropping I.Dioscoreophyllum cumminsii

    • R. J. Summerfield
    • B. H. Most
    • M. Boxall

    OriginalPaper Pages: 331 - 339

11. Plants used by the Mexican

    • Dolores L.
    • Felipe A. Latorre

    OriginalPaper Pages: 340 - 357

12. Job’s-tears (coix lacryma-jobi)—a minor food and fodder crop of northeastern India

    • R. K. Arora

    OriginalPaper Pages: 358 - 366

13. Mushrooms in yoruba mythology and medicinal practices

    • B. A. Oso

    OriginalPaper Pages: 367 - 371

14. Beta vulgaris var. orientalis, a Useful

    • M. P. Nayar
    • K. Ramamurthy

    OriginalPaper Pages: 372 - 373

15. The origin and early development of straw mushroom cultivation

    • Shu-Ting Chang

    OriginalPaper Pages: 374 - 376