Measurement of vessels for the Panama canal (1913)
Johnson, Emory R. (Emory Richard), 1864-1950, United States. War Dept · Washington, Govt. Print. Off. · leaf 276
aa. E = space exempted. M = space measured. bb > J aa. E = space exempted. M = closed-in houses, measured. M = space measured. … bb > J aa. E = space exempted. M = closed-in houses, measured. M — space measured.
