Green manures and cover crops : january 1987 - september 1991
/por Jane Potter Gates
- Maryland, EUA : National Agricultural Library, 1991
- 54 p.
- Quick bibliography series. ; 92-11 .
- Quick bibliography series. Alternative farming systems ; 92-11 .
1052-5378
103533
Abonos verdes. Bibliografía. Cultivos de cobertura.