De G Allen D.N. (1954). Relaxation Methods (1954.). McGraw-Hill Bokk Company.
Chicago Edition CitationDe G Allen D.N. Relaxation Methods. 1954. London: McGraw-Hill Bokk Company, 1954.
MLA Edition CitationDe G Allen D.N. Relaxation Methods. 1954. McGraw-Hill Bokk Company, 1954.
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