Dyfyniad APA

(2000). Hierarchical systems analysis in karst terrains / U.S. Dept. of the Interior, U.S. Geological Survey.

Dyfyniad Arddull Chicago

Hierarchical Systems Analysis in Karst Terrains / U.S. Dept. of the Interior, U.S. Geological Survey. 2000.

Dyfyniad MLA

Hierarchical Systems Analysis in Karst Terrains / U.S. Dept. of the Interior, U.S. Geological Survey. 2000.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.