TY  - JOUR 
T1  - Quantitative Assessment of Soil Physical Quality in Northern China Based on S-theory
JO  - Revista Brasileira de Ciência do Solo
A1  - Yang, Dejun
A1  - Bian, Zhengfu
A1  - Zhang, Kefeng
A1  - Xiong, Jibing
A1  - Lei, Shaogang
SN  - 0100-0683
UL  - 10.1590/01000683rbcs20150030
VL  - 39 
Y1  - 2015
PB  - Brasil 
ER  -