International Chamber of Shipping Prevention of oil spillages through cargo pumproom sea valves / International Chamber of Shipping. - 2nd ed. - London : Witherby 1991 - 15 p. : ill.21cm. ISBN: 9781856090193 LC Class. No.: VM455 .I11 1991 Dewey Class. No.: VM455 .I11 1991 National Library of Medicine Call No.: VM455 .I11 1991