De Ong, E. R. (Elmer Ralph), 1882–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2172543A
- pdbooks.info ID: 167447
E. R. (Elmer Ralph) De Ong Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
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| Chemical and natural control of pests | 1960 | Author | |  | |  |  | 
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| Chemistry and uses of insecticides | 1948 | Author | | | | | |
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| Insect, fungus, and weed control | 1953 | Author | | | | | |
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