Assessment of verticillium biguttatum in agricultural soils P.H.J.F. van Boogert; and W. Gams text Ind Repr. from : Soil Biol. Bio. Chem, 20(1988): 899-904. Repr. from : Soil Biol. Bio. Chem, 20(1988): 899-904. VERTICILLIUM BIGUTTATUM SOIL BIOLOGY