00383naa a2200133 a 450000100080000000500110000800800410001910000200006024500850008026000090016565000140017470000180018877300430020616010301995-06-27       1978    bl ---       0--  u    #d1 aSPARLING, G. P.  aMycorrhizal infection on Pennine grassland. 1. Levels of infection in the field.  c1978  aMicorriza1 aTINKER, P. B.  tJ. Appl. Ecol.gv.15, p.943-950, 1978.