00531nam a22001457a 4500003000400000005001700004008004100021040001400062100002800076245010300104260000900207300002900216500011400245504002600359OSt20171010095448.0120621t        xxu||||| |||| 00| 0 eng d  aMMSUcULS  aBulong, Katline May C.   aEcological impact of anthropogenic activities in Paoay Lake, Ilocos NortecKatline May C. Bu;long   c2007  axii, 50 leaves c28 cm.   aThesis (BS Environmental Science) -- Mariano Marcos State University-College of Arts and Sciences, Batac City  aBibliography: leaf 32