Determining key.

Do not expect to find in this book of stunning color board flora. This book (a little old) is a suite of determining key synopsis of the flora of France, Switzerland and Belgium. A work book for botanist and having references (Gaston Bonnier) on hand and the field. For color boarders; The vast flora in five volumes by the same publisher. The flora of Corsica is excluded from this volume. A reference and a necessary basis for work.