Nickle (Beltsille Agricultural Research Center of the USDA) has engaged 29 internationally known experts to replace the classic work of I.N. Filipjev (1934) and its translated revision (Schuurmans Stekhoven, Jr., 1941) with a modern work taking note of 188 additional genera, and 4,650 more species.

Set includes revised editions of some issues.

Westcott’s Plant Disease Handbook, 7th Edition, should be useful to anyone with a keen interest in gardening. The seventh edition uses the traditional convenient format of previous editions providing easy access to essential information quickly with special dictionary-type entries on plant hosts and on symptoms. It provides useful cross references, indexes, illustrative plates of 34 key diseases, and 40 black and white illustrations of other diseases. New and updated material includes: significant taxonomic changes in fungi, bacteria, viruses and nematodes, and recently discovered diseases and new hosts for previously known plant-pathogens.