| Title: | How to know the butterflies; illustrated 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 them |
| Author: | Ehrlich, Paul R. |
| Note: | W. C. Brown Co., 1961 |
| Link: | page images at HathiTrust; US access only |
| No stable link: | This is an uncurated book entry from our extended bookshelves, readable online now but without a stable link here. You should not bookmark this page, but you can request that we add this book to our curated collection, which has stable links. |
| Subject: | Butterflies -- North America -- Identification |
| Other copies: | Look for editions of this book at your library, or elsewhere. |
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