A cartographical programme and area measuring method for land-type map scaled 1 : 25,000 with the map of Huapi District in Chongyang County as an example
2.5万土地类型图的编图程序和面积量算方法&以崇阳县华陂区为例
Nahuel Huapi National Park
纳韦尔瓦皮国家公园
huapi