Practical Conic Sections: The Geometric Properties of Ellipses, Parabolas and HyperbolaseBookPractical Conic Sections: The Geometric Properties of Ellipses, Parabolas and HyperbolaskaryaJ. W. DownsPenilaian: 0 dari 5 bintang0 penilaianSimpan Practical Conic Sections: The Geometric Properties of Ellipses, Parabolas and Hyperbolas untuk nanti