TY  - JOUR 
T1  - Temporal-spatial differences in and influencing factors of agricultural eco-efficiency in Shandong Province, China
JO  - Ciência Rural
A1  - Yanlin, Xu
A1  - Zijun, Li
A1  - Liang, Wang
SN  - 0103-8478
UL  - 10.1590/0103-8478cr20190818
VL  - 50 
Y1  - 2020
PB  - Brasil 
ER  -