@article{孙文昌_211, author = {[孙文昌]}, title = {长白山区域旅游资源开发的几个问题}, publisher = {自然资源学报}, year = {1990}, journal = {自然资源学报}, volume = {5}, number = {3}, eid = {211}, pages = {211-217}, keywords = {
旅游区;多层次旅游
}, doi = https://www.jnr.ac.cn/CN/10.11849/zrzyxb.1990.03.003 }