By Ping X.   Xiaopu Z.   in Journal of Asian Economics

ISSN:1049-0078|14|2|327-336

Elsevier‎(2003)‎

Access to resources Favorite 13.060938

By Zitong G.   Xiaopu Z.   Guobao L.   Han S.   Spaargaren O.   in Geoderma

ISSN:0016-7061|75|3|289-296

Elsevier‎(1997)‎

Access to resources Favorite 8.401992