Richards, Oswain Westacott. <br/><br/>
The effective use and proper care of the microscope 

 - Buffalo :  American Optical,  1941 
 - 62 p.  : ilus. 
<br/><br/><label>LCCN: </label>48234 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microscopio y microscopía.