Gratkowski, H.
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2186243A
- pdbooks.info ID: 167493
H. Gratkowski Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Brush problems in southwestern Oregon | 1961 | Author | |  | |  |  | 
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| Effects of herbicides on some important brush species in southwestern Oregon / by H. Gratkowski. | 1959 | Author | | | | | |   
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