Dean, William E. <br/><br/>
How low can an unmanned air vehicle fly? / 
William E. Dean 
 - Santa Monica, California :  Rand Corporation,  1990 
 - 36 p. :  ill. ;  28 cm. 
 - The Rand corporation papers ;  P-7680-RGS .
 - Rand corporation papers ;  P-7680-RGS .
<br/><br/> Rand / RP - 7680 - RGS 
<br/><br/><label>ISBN: </label> Hadiah 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drone aircraft--Safety measures<br/>Guidance systems (Flight)<br/>Drone aircraft--Juvenile literature