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Porter, Raymond E. (ed.) / The Wisconsin engineer
Vol. 21, No. 8 (May 1917)
Contents
![[page image]](http://images.library.wisc.edu/UW/EFacs/WIEngr/WIEv21no8/L/0003.jpg)
Based on date of publication, this material is presumed to be in the public domain.| For information on re-use, see http://digital.library.wisc.edu/1711.dl/Copyright




