[PDF.60el] A Monograph of the Jumping Plant-Lice or Psyllidae of the New World (Classic Reprint)

A Monograph of the Jumping Plant-Lice or Psyllidae of the New World (Classic Reprint)

[PDF.rr67] A Monograph of the Jumping Plant-Lice or Psyllidae of the New World (Classic Reprint)

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 |  2016-06-22 | Original language:English |  9.00 x.55 x6.00l,.78 | File type: PDF

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Excerpt from A Monograph of the Jumping Plant-Lice or Psyllidae of the New World
As the work progressed and other large collections were studied, many unsatisfactory features were found in this system and a great many difficulties encountered. Some of these have been mentioned in more or less detail in my former papers on this group. It became apparent that any classification based principally on wing venational characters would be artificial and unsatisfactory. At t...

You can specify the type of files you want, for your gadget.A Monograph of the Jumping Plant-Lice or Psyllidae of the New World (Classic Reprint)   |  David L Crawford. I have read it a couple of times and even shared with my family members. Really good. Couldnt put it down.

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