SYPHERD, W. O.
The engineer's manual of English. By W. O. Sypherd, Alvin M. Fountain & Sharon Brown. Rev. ed.
SYPHERD, W. O. The engineer's manual of English. By W. O. Sypherd, Alvin M. Fountain & Sharon Brown. Rev. ed. © 5Jun43; A173897. Scott, Foresman & Co. (PWH); 9Feb71; R500002.
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