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Corinth Notebook Page: NB 435, spread 104 (p. 198)
Entry:   [no page number], Manhole # 20 and adjacent tunnels section looking W, Drawing, Manhole # 20 and adjacent tunnels section looking W
    Pg. 198, Manhole # 19, 19/5/1969, NB435 B6, Manhole # 19, Lot 6292
Date:   19/5/1969