Lastrucci, Carlo L  <br/><br/>
The scientific approach  basic principles of the scientific method 
by Carlo L. Lastrucci. 
 - Cambridge, Mass.:   Schenkman Pub. Co.,   1967. 
 - 257 pages :    illustrations ;    22 cm. 
<br/><br/>page 248-252. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Methodology.