Smith, D.W.,B.G. Sims and D.H. O'Neil <br/><br/>
Testing and evaluation of agricultural machinery and equipment: principles and practices  

 - FAO  Rome  1994 
<br/><br/><label>ISBN: </label>92-5-100401-3 
<br/><br/><label>LC Class. No.: </label>FAO S 671   / S58 1994