TY  - BOOK
AU  - de A.Machado,P.L.O.
AU  - Gerzabek,M.H.
ED  - Forschungszentrum Seibersdorf
TI  - Tillage and crop rotation interactions on humic substances of a typic haplorthox from southern Brazil
SN  - 0253-5270
PY  - 1993///
CY  - Seibersdorf
PB  - Forschungszentrum Seibersdorf
ER  -