Maramba, Felix D. <br/><br/>
Sludge as fertilizer 

<br/><br/> Sobretiro de: Maramba, D.F. Biogas and waste recycling: the philippine experience. 1978: 152-168 
<br/><br/><label>LCCN: </label>30514 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biogas.<br/>Estiércol.<br/>Fertilizantes.