Hydroponics – nutrient film techniques : January 1983 – December 1991 (SuDoc A 17.18/4:92-43)
March 30, 2010 by admin
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Hydroponics, nutrient film techniques : January 1985 – June 1990 (SuDoc A 17.18/4:90-77)
March 27, 2010 by admin
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Hydroponics-nutrient film technique, January 1983-November 1988: 239 citations (Quick bibliography series)
February 17, 2010 by admin
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Hydroponics Nutrient Film Techniques: January 1984-March 1994
November 2, 2009 by admin
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