000
00311nam a22001457a 4500
999
_c
159052
_d
159052
082
_a
_b
100
_a
William Wiersma
245
_a
Research methods in education/
_c
by William Wiersma.
260
_a
Boston
_b
Allyn,
_c
1986.
300
_a
466p.
490
_a
600
_a
650
_a
942
_c
BK