Hartell, Jason. <br/><br/>
The contribution of genetic resources and diversity to wheat productivity :  a case from the Punjab of Pakistan 
/by Jason Hartell [and others] 
 - México, D.F. :  Centro Internacional de Mejoramiento de Maíz y Trigo,  1997. 
 - 35 p. ;  gráfs. ; tablas 
 - Economics. Working paper  ; 97-01 .
 - CIMMYT .
 - Economics. Working paper  ; 97-01 .
<br/><br/><label>LCCN: </label>78543 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Recursos genéticos.<br/>Trigo--Pakistán.<br/>Trigo--Rendimiento.<br/>Trigo--Variedades.