Hydroponics
Douglas, J.S.
Hydroponics The Bengal system with notes on other methods of soilless cultivation by J.S. Douglas - 5th edn. - Bombay Oxford University Press 1976 - 185 p.
Hydroponics
Soilless Cultivation
631.589.2(541.2) / D 734 H
Hydroponics The Bengal system with notes on other methods of soilless cultivation by J.S. Douglas - 5th edn. - Bombay Oxford University Press 1976 - 185 p.
Hydroponics
Soilless Cultivation
631.589.2(541.2) / D 734 H