00315nam a2200121Ia 4500008004100000082001400041100002100055245001900076260003700095300001300132600002100145650002700166140224s9999    xx            000 0 und d  a632.38 L0  aMatthews, R.E.P.  aPlant virology  aNew YorkbAcademic Presscc 1970  axv,778p.  aR.E.P. Matthews   aVirology,Plant Viruses