21 shi ji chu Tai hai an quan yu chong tu yu fang"Guo jia an quan yu jun shi zhan lüe" guo ji xue shu yan tao hui · First published 2002Open the Tome
Cartographic representation of loess landforms on large-scale mapsMei-xin Jiang, Jia-Jun Yu, Air Force Cambridge Research Laboratories (U.S.) · First published 1969Open the Tome
