00385naa a2200133 a 450000100080000000500110000800800410001910000190006024500680007926000090014765000110015665000110016777300730017818349732013-09-23       1961    bl ---       0--  u    #d1 aPIENING, L. J.  aThe occurrence of Pyrenophora teres on barley straw in Alberta.  c1961  aCanada  aCevada  tCanadian Plant Disease Survey, Ottawagv. 41, n. 5, p. 299-300 1961.