1. Editorial

   • N. W. F. Kossen

   EditorialNotes Pages: 415 - 416

2. Meetings calendar

   Events Pages: 417 - 418

3. Optimization of a medium for a high yield production of spore-crystal preparation ofBacillus thuringiensis effective against the Egyptian cotton leaf wormSpodoptera littoralis Boisd.

   • I. Goldberg
   • B. Sneh
   • D. Klein

   OriginalPaper Pages: 419 - 426

4. Saccharification of sugar cane bagasse by an enzyme preparation fromCellulomonas: Resistance to product inhibition

   • N. Choudhury
   • P. P. Gray
   • N. W. Dunn

   OriginalPaper Pages: 427 - 428

5. Polyethylene beads as supports for enzyme immobilization

   • T. T. Ngo
   • J. Ivy
   • H. M. Lenhoff

   OriginalPaper Pages: 429 - 434

6. Gamma-ray irradiation as a pretreatment for the enzymatic hydrolysis of cellulose

   • David H. Beardmore
   • L. T. Fan
   • Yong-Hyun Lee

   OriginalPaper Pages: 435 - 438

7. Effects of aqueous sulfur dioxide on cellulose

   • Anthony H. Conner

   OriginalPaper Pages: 439 - 444

8. The regeneration of coenzymes using immobilized hydrogenase

   • Alexander M. Klibanov
   • Austin V. Puglisi

   OriginalPaper Pages: 445 - 450

9. Immobilization of yeast cells on polyphenyleneoxide

   • V. Jirku
   • J. Turková
   • V. Kubánek

   OriginalPaper Pages: 451 - 454

10. Plasmid and chloramphenicol production inStreptomyces venezuelae

    • Vedpal S. Malik

    OriginalPaper Pages: 455 - 457

11. Forthcoming papers

    Announcement Pages: 458 - 458