Silayo, Valerian C.K. <br/><br/>
Small biogas plants :    design, management and use /  
Valerian C. K. Silayo. 
 - Harare :    AGROTEC,    1992. 
 - 94 p. :    ill. ;    30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Gobar gas