• PDF https://www.jstor.org/stable/40374163

  • PDF https://www.jstor.org/stable/40374081

  • PDF https://www.jstor.org/stable/40351750

Scalar Control

October 1, 1975

  • PDF https://www.jstor.org/stable/40375088

  • PDF https://www.jstor.org/stable/40373311
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