Book Reviewed in this article:

Fortschritte der Chemie organischer Naturstoffe: Progress in the Chemistry of Organic Natural Products, vol. 51. Founded by L. Zechmkister. Ed. by W. Herz, H. Grisebach, G. W. Kirby and C. Tamm.

Immobilized Cells: Principles and Applications. By J. Tampion and M. D. Tampion.

Cell and Tissue Culture in Forestry, Volume 3. Case Histories: Gymnosperms, Angiosperms and Palms. Ed. by J. M. Bonga and D. J. Durzan.

Anatomy of the Dicotyledons. Second Edition. Vol III. Magnoliales, Illiciales, and Law ales. By C. R. Metcalfe.

The Ecology of the Nitrogen Cycle. By Janet I. Sprent.