000
00291nam a2200133Ia 4500
008
161121s9999 xx 000 0 und d
100
_a
WILSON M ;GLADDYS G
245
0
_a
Extension in teaching methods
260
_c
NIL
365
_b
0
650
_a
NIL
652
_a
#N/A
942
_c
BK
999
_c
22047
_d
22047