Trigonometric Functions and Complex Numbers World Century Mathematical Olympiad Series Autor Desheng Yang 2 oct 2016 Paperback Preț: 272.64 lei 6-8 săpt.
TRIGONOMETRIC FUNCTIONS AND COMPLEX NUMBERS World Century Mathematical Olympiad Series Autor Desheng Yang & Chunhui Shen 22 sep 2016 Hardback Preț: 492.29 lei 6-8 săpt.