E. W. Johnson

2 published titles

Symposium "Substrates in Horticulture Other Than Soils in Situ” held in France, 30th August-5 September 1981

1 edition

International symposium on substrates - 'substrates in horticulture other than soils in situ' : Barcelona, Spain - 28 Aug to 3 Sep 1983

1 edition