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"Nuevos herbicidas para el control de las malezas en papa" (Solanum tuberosum L.) / por Carlos Medrano, Hernán Guédez A., José Mendoza.
- 878.2
- s.n.],
- 1969.
- [S.l. :
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Early maturity sprays of arsenate compounds on grapefruit and carry-over effects / by J.M. del Rivero, P. Veyrat and D. Gomez de Barreda.
- 847.1
- s.n.],
- 1969.
- [S.l. :
-
Improving fruit set in Clementine mandarin with chemical treatments in Spain / by J.M. del Rivero, P. Veyrat and D. Gomez de Barreda.
- 847.1
- s.n.],
- 1969.
- [S.l. :