共 50 条
- [41] Horizons and humus forms in beech forests of the Belgian Ardennes Soil Sci. Soc. Am. J., 6 (1888-1901):
- [46] Note on the mechanical analysis of humus soils JOURNAL OF AGRICULTURAL SCIENCE, 1922, 12 : 287 - 291
- [50] REMOTE DETERMINATION OF HUMUS CONTENT IN SOILS DOKLADY AKADEMII NAUK SSSR, 1982, 266 (06): : 1477 - 1479