"learning by doing".

Manylion Llyfryddiaeth
Awdur Corfforaethol:	Philippines. Dept. of Agriculture. Agricultural Training Institute
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Batangas, Philippines International Training Center on Pig Husbandry 2000.
Pynciau:	Livestock-Swine.