Oleum:

3 ship citations (2 free) in 3 resources
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Oleum -- tanker
Book The H. W. McCurdy Marine History of the Pacific Northwest
Author Gordon R. Newell, ed.
Published Superior Publishing Company, Seattle,
Pages 189, 573
Oleum, tanker
Journal American Neptune (1941-1990; Vols. 1-50)
Published Peabody Essex Museum, Salem, Mass.,
ISSN 0003-0155
Pages (1910), XXXVIII, 200 ff.