Merkoša sitáhtat

APA-čujuhus (7. p.)
Jadwin Edgar & Joint board of engineers on St. Lawrence waterway project. (1927). St. Lawrence waterway. Government Printing Office.
Chicago-čujuhus (17. p.)
Jadwin Edgar juo Joint board of engineers on St. Lawrence waterway project. St. Lawrence Waterway. Government Printing Office, 1927.
MLA-čujuhus (9. p.)
Jadwin Edgar juo Joint board of engineers on St. Lawrence waterway project. St. Lawrence Waterway. Government Printing Office, 1927.
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