Text is in English, Spanish, and German.
Volume 1 & 2 - written in 1974 - describes 279 species in 67 genera, with comments on a further 41 species in the apendix. - 267 colour photographs and 265 line drawings and index.
Volume 3 - written 1981 describes 84 additional species in 49 genera, not previously recorded. 67 colour photographs; 132 line drawings and index.
The 3 volume set of this title is rarely offered for sale.