Pleuthner, W. A. (1952). More power for your proven plans and projects. Farrar, Straus and Young.
Chicago-čujuhus (17. p.)Pleuthner, Willard Augustus. More Power for Your Proven Plans and Projects. Farrar, Straus and Young, 1952.
MLA-čujuhus (9. p.)Pleuthner, Willard Augustus. More Power for Your Proven Plans and Projects. Farrar, Straus and Young, 1952.
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