@article{CHEN Chang song_373, author = {CHEN Chang song, HE Jian bang }, title = {Data Logic Study for the Resources and Environment Information System Design in a Feature based Approach}, publisher = {Acta Geographica Sinica}, year = {1999}, journal = {Acta Geographica Sinica}, volume = {54}, number = {4}, eid = {373}, pages = {373-381}, keywords = {category theory;geography elements;GIS model;environment and resources information}, doi = https://www.geog.com.cn/EN/10.11821/xb199904010 }