Widdowson, R. W. <br/><br/>
Towards holistic agriculture :  a scientific approach / 
by R.W. Widdowson ; with a foreword by the Lady Eve Balfour. 
 - Oxford [Oxfordshire] :  Pergamon Press,  1987. 
 - xi, 187 p. :  ill. 
<br/><br/><label>ISBN: </label>0080342116 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Organic farming.<br/>Agricultural ecology.<br/>Agriculture.