19 Jun 202019 Jun 2020 Moises Zarraga Trigonometry, 4ed [Schaum’s Outlines] — Robert E. Moyer & Frank Ayres jr
23 Abr 202023 Abr 2020 Moises Zarraga Trigonometry, 3ed [Schaum’s outlines] — Robert E. Moyer & Frank Ayres Jr