Scaling soil nutrient balances :  Enabling mesolevel applications for African realities. 
FAO Fiat Panis 
 - Rome :  Food and Agriculture Organization of the United Nations,  2004. 
 - 132 p. :   ill., maps ;  25 cm. 
 - FAO fertilizer and plant nutrition bulletin ;  15 .
<br/><br/>Includes bibliographical references (p. 71-82). 
<br/><br/><label>ISBN: </label>92-5-105237-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil fertility.