Heydenreich, Ludwig Heinrich <br/><br/>
Leonardo da Vinci the scientist / 
Ludwig Heinrich Heydenreich. 
 - s. l. :  International business machines corporation,  1951. 
 - 32 p :  ill ;  31 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Leonardo di ser Piero da Vinci (1452-1519) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Изобретене Леонардо да Винчи<br/>Итальянская живопись