Nitrate water activities /
| Corporate Authors: | , |
|---|---|
| Other Authors: | , |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Beltsville, Md. :
Educational Service Branch, Agricultural Research Center ;
[1972]
|
| Series: | Science Study Aid ;
no. 4. |
| Subjects: |
| Item Description: | Caption title. "Issued October 1971; slightly revised January 1972"--page 12. |
|---|---|
| Physical Description: | 12 pages : illustrations ; 26 cm. |
| Bibliography: | Bibliography: page 12. |