The Philippines recommends for duck egg production 

 - Los Banos, Laguna :  PCARRD,  2006 
 - xi, 50 pages  illustration ;  22 cm. 
 - Philippines Recommends Series No.90-B .
<br/><br/><label>ISBN: </label>9712005186 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Duck egg production