Patton, Michael Quinn Practical evaluation / Michael Quinn Patton - Beverly Hills : Sage, c1982. - 319 p. ; 23 cm. ISBN: 0803919042 LCCN: Subjects--Topical Terms: Evaluation research (Social action programs) LC Class. No.: H62 / .P3217 1982 Dewey Class. No.: 001.433 / P315p