Peterson, Warren. <br/><br/>
A digest from the field notes of Warren Peterson, Ph.D. :  Northeastern Mindanao archeological project Masago, Butuan, Agusan Del Norte April 4-30, 1981. 

 - Makati City :  Ayala Foundation, Inc.,  2016. 
 - 51 pages :  color illustrations ;  23 cm 
<br/><br/>Includes bibliographic references. 
<br/><br/><label>ISBN: </label>9786218028050 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Excavations (Archaeology)--Philippines--Luzon.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Mindanao (Philippines)--Antiquities.
<br/><br/><label>LC Class. No.: </label>CC76 
<br/><br/><label>Dewey Class. No.: </label>930.1