00493nam a22001457a 4500003000400000005001700004008004100021040001400062100002600076245009500102260000900197300003000206500007800236504003300314OSt20171010095250.0110906t        xxu||||| |||| 00| 0 eng d  aMMSUcULS  aAsuncion, Antonio M.   aDiscourse skills development of ESL learners at the elementary levelcAntonio M. Asuncion   c2008  axiii, 214 leaves c28 cm.  aThesis (Ph.D.-Linguistics) -- Mariano Marcos State University, Laoag City  aBibliography: leaves 176-179