TY  - BOOK
AU  - Green,J.A.
AU  - Marken,W.J.
AU  - Calvin Alexander Jr,E.
TI  - Karst unit mapping using geographic information system technology, Mower County, Minnesota, USA
UR  - https://drive.google.com/file/d/1BO8IWGQ7a4eZSvTj9OIqxuuW6vuLMu2B/view?usp=drivesdk
ER  -