TY  - RPRT
TI  - Terrain diagrams in isometric projection – Simplified
AU  - J.R. Stacy
PY  - 1958
DO  - 10.1111/j.1467-8306.1958.tb01577.x
UR  - https://pubs.usgs.gov/publication/70211899
ID  - 70211899
ER  -