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~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, 2015
~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2012
~ Oxalis CA topo map, 1:31680 scale, 7.5 X 7.5 Minute, Historical, 1922, updated 1936
~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1956, updated 1960
~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1956, updated 1957
~ Oxalis CA topo map, 1:31680 scale, 7.5 X 7.5 Minute, Historical, 1922
~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1956, updated 1983
~ Oxalis CA topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1956, updated 1984