The relationship of mask angles to terrain geometry and its applicability to military problems (Project CATVAR) Contract no. Internal research 86-119.

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Terrain features of drainage basins in the Sierra Nevada west-side snow zone /

Mode of access: Internet.

Terrain mask angles.

"Presented at Joint session of AAAS Section E and Geological Society of America Symposium on Quantitative Terrain Studies, Section E, Chicago, Illinois, December 28, 1959."