Cohen, Louis.
Research methods in education / Louis Cohen, Lawrence Manion. Louis Cohen, Lawrence Manion. - 4th. ed. - London : Routledge, 1994. - 414p. : ill.
Includes bibliographies.
0415102359 (pbk)
Educational research.
Research methods in education / Louis Cohen, Lawrence Manion. Louis Cohen, Lawrence Manion. - 4th. ed. - London : Routledge, 1994. - 414p. : ill.
Includes bibliographies.
0415102359 (pbk)
Educational research.