Section south of the southeast corner of the Southwest Fountain House ... north 4377 Horizontal (normal) ... 26 Jul 1966
Notes ... G.V. Lalonde ... 4301 4496 ... 1966
Relationship of Water Channels in Trench IV to Those to the South; Section ΣΤ' ... Κ-22 4377, 4378 84-612 ... 1932
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