Modern computing methods 
National Physical Laboratory                                 
 - 2nd ed. 
 - London  Her Majesty's Stationary Office  1961 
 - vi, 169p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and astrophysics thesaurus<br/>Differential equations<br/>Intergral equations
<br/><br/><label>Universal Decimal Class. No.: </label>519.6  / NPL