Azul, Hayden U
Six-place logarithms and trigonometric tables / Hayden U. Azul. - [s.l.] : The Author, c1987. - 173 p. : ill.
Logarithms
Trigonometry--Tables, etc
Six-place logarithms and trigonometric tables / Hayden U. Azul. - [s.l.] : The Author, c1987. - 173 p. : ill.
Logarithms
Trigonometry--Tables, etc