00280naa a2200109 a 450000100080000000500110000800800410001910000160006024500310007626000090010777300540011618259202010-01-10       1977    bl ---       0--  u    #d1 aCOLLINS, A.  aHigh yielding wheat crops.  c1977  tBig Farm Management, London, p. 27-29, Sep. 1977.