Pyenson, Louis, 1909–1986
Nationality: 
(United States)
Louis Pyenson Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Elements of plant protection | 1951 | Author | |  | |  | | 
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Public Domain BooksNationality: (United States)
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
| | |
| ||||||
| Elements of plant protection | 1951 | Author | | | | | |
| |