Palmer, C.I. Practical mathematics for home study : being the essentials of arithmetic, geometry, algebra and trigonomerty / by Claude Irwin Palmer; C.I. Palmer .— 1 edition : 3 impression .— : Hill publishing Co. — 29 с. — Lang: eng .— URL: https://rucont.ru/efd/130850 (дата обращения: 16.05.2024)