String Figures and other monographs, Chelsea, New York, 1960. $3.95. - String Figures, by W.W.R. Ball. Third edition, 1920. 72 pages. - Methods and Theories for the Solution of Problems of Geometrical Construction, by J. Petersen (translated from the Danish). 1879. 102 pages. - The Elements of Non-Euclidean Plane Geometry and Trigonometry, by H. S. Carslaw. 1916, 179 pages. - History of the Logarithmic Slide Rule and Allied Instruments, by F. Cajori. 1909. 136 pages.

H. Schwerdtfeger

doi:10.1017/S0008439500025558

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String Figures and other monographs, Chelsea, New York, 1960. $3.95. - String Figures, by W.W.R. Ball. Third edition, 1920. 72 pages. - Methods and Theories for the Solution of Problems of Geometrical Construction, by J. Petersen (translated from the Danish). 1879. 102 pages. - The Elements of Non-Euclidean Plane Geometry and Trigonometry, by H. S. Carslaw. 1916, 179 pages. - History of the Logarithmic Slide Rule and Allied Instruments, by F. Cajori. 1909. 136 pages.

Volume 3, Issue 3
H. Schwerdtfeger ^(a1)
DOI: https://doi.org/10.1017/S0008439500025558

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String Figures and other monographs, Chelsea, New York, 1960. $3.95. - String Figures, by W.W.R. Ball. Third edition, 1920. 72 pages. - Methods and Theories for the Solution of Problems of Geometrical Construction, by J. Petersen (translated from the Danish). 1879. 102 pages. - The Elements of Non-Euclidean Plane Geometry and Trigonometry, by H. S. Carslaw. 1916, 179 pages. - History of the Logarithmic Slide Rule and Allied Instruments, by F. Cajori. 1909. 136 pages.

Volume 3, Issue 3
H. Schwerdtfeger ^(a1)
DOI: https://doi.org/10.1017/S0008439500025558

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

String Figures and other monographs, Chelsea, New York, 1960. $3.95. - String Figures, by W.W.R. Ball. Third edition, 1920. 72 pages. - Methods and Theories for the Solution of Problems of Geometrical Construction, by J. Petersen (translated from the Danish). 1879. 102 pages. - The Elements of Non-Euclidean Plane Geometry and Trigonometry, by H. S. Carslaw. 1916, 179 pages. - History of the Logarithmic Slide Rule and Allied Instruments, by F. Cajori. 1909. 136 pages.

Volume 3, Issue 3
H. Schwerdtfeger ^(a1)
DOI: https://doi.org/10.1017/S0008439500025558

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