Porter, Jill Researching learning difficulties : a guide for practitioners / Jill Porter and Penny Lacey - London : Paul Chapman Publishing, c2005. - xv, 189 p. : 25 cm. ISBN: 9780761948513 LCCN: Subjects--Topical Terms: Learning disabled childrenResearchGreat LC Class. No.: LC4706 / .G7P67 2005 Dewey Class. No.: 371.90941 / P844r