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| 1 |
Natural Scenery and Caves of Huanren in Northeastern China
Soh, Dea-Wha;
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The Speleological Society
, v., no.69, pp.1-7,
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| 2 |
The Landform Developments in Relation with the Geologic Structures
Kim, Joo-Hwan;
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The Speleological Society
, v., no.69, pp.9-20,
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| 3 |
A theological Study on the Depression Form & Closed small Hollows in Karst Landforms
Kim, Chu-Yoon;
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The Speleological Society
, v., no.69, pp.21-31,
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| 4 |
A Study on the Classification Distribution Characteristic of Tour Cave in Northeastern Asia
Hong, Choong-Real;
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The Speleological Society
, v., no.69, pp.33-47,
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| 5 |
The Developmental Stages of the Circumstances and Characteristics in Wentland - In the Gyunggi Do Mountains -
Moon, Hyun-Sook;
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The Speleological Society
, v., no.69, pp.49-60,
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