Catarman to Oras Bay. - Philippines. Bureau of Coast and Geodetic Survey (Manila Philippine Coast and Geodetic Survey, 1973)
Inset: Helm Harbor and San Ramos Bay : East Coast of Samar.
Keywords: Catarman (Samar) -- Maps; Oras (Samar) -- Maps; Helm Harbor (Samar) -- Maps; San Ramon Bay (Samar) -- Maps