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