000
00273nam a2200121Ia 4500
008
191031s9999 xx 000 0 und d
100
_a
Sukhia
245
0
_a
Elements of educational research
260
_b
Allied pub
260
_c
1970
365
_b
14.00
942
_c
BK
999
_c
198063
_d
198063