Dyfyniad APA

Stringfield, E. b. M. H. a. V. Karst important Karst regions of the Northern hemisphere. Elsevier Publishing Company.

Dyfyniad Arddull Chicago

Stringfield, Edited by M. Herak and V.T. Karst Important Karst Regions of the Northern Hemisphere. Elsevier Publishing Company.

Dyfyniad MLA

Stringfield, Edited by M. Herak and V.T. Karst Important Karst Regions of the Northern Hemisphere. Elsevier Publishing Company.

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