Description
REPRINT FINE IN DUSTWRAPPER (WITH SLIGHT FADE TO SPINE). HELM IDENTIFICATION GUIDES. THIS IS THE FIRST COMPREHENSIVE GUIDE TO THE IDENTIFICATION AGEING AND SEXING OF ALL 116 SPECIES. THIRTY-SIX COLOUR PLATES SHOW THE MAJOR AGE SEX AND RACIAL VARIATIONS FOR ALL SPECIES (MANY OF WHICH HAVE NEVER BEEN ILLUSTRATED BEFORE. THEY ARE ACCOMPANIED BY COLOUR DISTRIBUTION MAPS AND BLACK-AND-WHITE DRAWINGS.