00739cas a22002297a 450000500170000000800410001701000100005801100100006802200140007803500100009224500840010226000750018630000070026131000140026832100150028236200190029750000540031665000490037086600220041986600340044186600340047520220329142128.0990827d1921    ca fr pernn   0 uub1eng d  a78899  a79871  a0008-476X  a9028600aCanadian Plant Disease Surveyc/by Agriculture Canada Research Program Services0 aOttawa, Canada :bAgriculture Canada Research Program Services,c1921-  av.  aSemestral  aTrimestral  av.75 n.1, 1995  aSe dejó de recibir a partir del v.75 n.2, 1995.14aFitopatologíaxPublicaciones periódicas.  av.45 n.1-4 (1965)  av.46 n.2-v.58 n.2 (1966-1978)  av.59 n.1-v.75 n.2 (1979-1995)