Smil, Vaclav. <br/><br/>
Feeding the world :  a challenge for the twenty-first century / 
Vaclav Smil. 
 - Cambridge, Mass. :  MIT Press,  c2000. 
 - xxxviii, 360 p. :  ill., maps ; 
<br/><br/>Includes bibliographical references (p. [317]-351). 
<br/><br/><label>ISBN: </label>0262194325 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural productivity.<br/>Food supply.
<br/><br/><label>Dewey Class. No.: </label>338.1/9  / SMI