00899nam a2200217Ia 450000100060000000300050000600500170001100800410002801000170006904300120008605000160009808200120011410000280012624503370015425000120049126000430050330000270054649000420057350000110061565000550062654789BIBL20160527185905.0730821s1961    iaua          00010 eng    a 61002394 /L  an------0 aQL548b.E45  a595.78910aEhrlich, Paul R.2Local10aHow to know the butterfliesbillustrated keys for determining to species all butterflies found in North America, north of Mexico, with notes on their distribution, habits, and larval food, and suggestions for collecting and studying themcby Paul R. Ehrlich and Anne H. Ehrlich. With sections contributed by D. L. Bauer [and others]  a1st ed.0 aDubuque, IowabW. C. Brown Co.c[1961]  a262 p.billus.c22 cm.0 aThe Pictured key nature series2Local  a920403 0aButterflieszNorth AmericaxIdentification.2Local