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"This work, with a foreword by Professor G.L. Hennebert, explains, simply and pedagogically the bases of the modern classification of this group, with an illustrated key to identification of the genera that make up the group. The illustrations are supplemented by information on …
"This work, with a foreword by Professor G.L. Hennebert, explains, simply and pedagogically the bases of the modern classification of this group, with an illustrated key to identification of the genera that make up the group. The illustrations are supplemented by information on …