por Phillips, H. B. (Henry Bayard), 1881- [autor] | Ortíz R., Teodoro [traductor] | Phillips, H. B. (Henry Bayard), 1881-. Calculus.
por Phillips, H. B. (Henry Bayard), 1881- [autor] | Phillips, H. B. (Henry Bayard), 1881-. Analytic geometry.