共 50 条
- [33] NITRATE-NITROGEN STATUS OF FALLOWED RANGELAND SOILS JOURNAL OF RANGE MANAGEMENT, 1970, 23 (06): : 445 - &
- [37] VARIATION IN AMOUNTS OF CARBON AND NITROGEN ASSOCIATED WITH PARTICLE-SIZE FRACTIONS OF SOILS FROM THE PALACE-LEAS MEADOW HAY PLOTS JOURNAL OF SOIL SCIENCE, 1986, 37 (02): : 249 - 257