Assessment of the avaibility of phosphate in soils by measurement of phosphate-stress in seedlings of sycamore Acer pseudoplatanus L. and birch Betula verrucosa Ehrh. using P32 phosphorus /
Harrison, A. F.
Helliwell, D. R.(Denis Rodney)
Merlewood Research Station.
[Grange over Sands] : Institute of Terrestrial Ecology,
1973.