Frost, P. Newton's principia : Section I. II. III. : with notes and illustrations : also a collection of problems / By Percival Frost; P. Frost .— : Macmillian and Co., 1863 .— 435 с. — Lang: eng .— URL: https://rucont.ru/efd/124308 (дата обращения: 15.06.2024)