00330nam a2200121 a 450000500170000002000150001708200220003210000060005411000260006024500710008626000290015730000220018620251203110046.0  a3540639810  a589.20452482bMYC  d_  aVarma, A. and Hock, B  aMycorrhizabstructure,function,molecular biology and biotechnology  aNew YorkbSpringerc1998  axviii,704p.c22cm