003410000a22001210004500060000800000082002200008100002000030245005600050260004700106260000900153300000800162650004900170  a100  a633.719 309 6 HOP  aHopkins, J.C.F.  aTobacco diseases : with special reference to Africa  aSurrey, Commonwealth mycological institute  c1950  a180  aTobacco - disease/ tobacco diseases - Africa