Refine Your Search
Book List
2
-
On a mineral oil spray to be used in the winter treatment of deciduous trees, combining the insecticidal properties of a tar oil wash and a mineral oil wash
- Bataafsche petroleum maatschappij,
- 1938.
- Amsterdam :
-
Universal ovicidal action of special mineral oil washes as a winter wash for deciduous fruit trees / by P.A. Blijdorp.
- Bataafsche petroleum maatschappij,
- 1938.
- Amsterdam :