na INLIS000000000004188 Ind 0010-1118004188 Relationship between the amount and the activity of the microbial biomass in dutch grassland soils : comparison of the fumigation-incubation method and the Substrate-induced respiration method HASSINK, J. J. Hassink 6 p. : ill. ; 27 cm. 6 p. : ill. ; 27 cm. Repr. from : Soil Biol. Biochem, Vol. 25(5) 1993 : p. 533-538 Bibl. : p. 538. 631.46 SOIL BIOLOGY GRASSLANDS NETHERLANDS mfn-5931