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Document Type

Research

Abstract

This paper is the result of a bibliographic study of lenses, on the part of Lloyd North and the writer. In the literature some thirty-two genetic types are described. In the present paper these types are classified and described. A bibliography is appended.

Publication Date

1922

Journal Title

Proceedings of the Iowa Academy of Science

Volume

29

Issue

1

First Page

128

Last Page

128

Copyright

©1922 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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