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by Henry C. De Roo
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Soils and other growth media
A. W. Flegmann
Quality of potting soils
G. J. Bugbee
Growing vegetables in straw bales
Craig LeHoullier
Plant culture media
Edwin F. George
The ABC of NFT
Allen John Cooper
Symposium on Substrates in Horticulture Other Than Soils in Situ, Auchincruive, Scotland, 17-20 September 1979
Symposium on Substrates in Horticulture Other Than Soils in Situ (1979 Auchincruive, Stratclyde)
Modified straw bale method for cucumbers
West of Scotland Agricultural College.
Proceedings
Symposium on Artificial Media in Horticulture Ghent 1973.
Artificial media in horticulture
Edward F. Maas