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esker (Geography Dictionary)

esker: Also called an os or spelled eskar or eschar.

A long, winding ridge of stratified sand and gravel, usually occurring in glaciated or formerly glaciated areas.

_ ស្វែងរកឬបកប្រែពាក្យផ្សេងទៀតនៅប្រអប់នេះ៖
ឯកសារការងារនិងរៀនគ្រប់ប្រភេទ៖​
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