Shepherd Walter <br/><br/>
Science marches on :  the origin, progress and significance of scientific knowledge / 
by Walter Shepherd ... with a foreword by S.W. Wooldridge ... with thirty-one plates in half-tone and numerous drawings by the author. 
 - London :  G.G. Harrap & co. ltd.,  1939. 
 - 419, [1] p.   illus., XXXI pl. (inc. front., diagr.) on 16 l., diagrs.   23 cm. 
<br/><br/> "First published 1939." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--History
<br/><br/><label>LC Class. No.: </label>Q125