Wilson, J.M. Solid geometry and conic sections : with appendices on transversals, and harmonic division : for the use of schools / by J.M. Wilson; J.M. Wilson .— : Macmillan and co., 1872 .— 145 с. — Lang: eng .— URL: https://rucont.ru/efd/128579 (дата обращения: 29.05.2024)