内容简介
Designedforbeginnersandexperiencedcollectorsalike,thesefieldguidesmakeidentificationofindividualspecimenssure,simpleandstraightforward.Eachentryhasafullcolorillustrationaswellascolor-codedbandsthatprovideat-a-glancefactsforquickreference.Easytouseandbeautifultolookat,thisseriesisaninvaluableresourceforeverycollector.