Studies on the littoral echinoderm fauna of Ilocos Sur between Candon and Vigan [microform] - Acosta, Theresita E. (Quezon City Photoduplication Service, University of the Philippines Library, 1974)
Microfilmed with 11 other titles.
Thesis (M.S.)--University of Santo Tomas, Manila
Originally published in 1969.
Keywords: Echinoderm -- Philippines -- Ilocos Sur