Plant Lectins. By A. Pustzai.

Techniques for the Rapid Detection of Plant Pathogens. Ed. by J. M. Duncan and L. Torrance.

Ecological Genetics and Air Pollution. Ed. by G. R. Taylor, Jr., L. F. Pitelka and M. T. Clegg.

Arctic Ecosystems in a Changing Climate. Ed. By F. S. Chapin III, R. L. Jefferies, J. F. Reynolds, G. R. Shaver, J. Svoboda and E. W. Chu.