000
00246nam a2200097Ia 4500
008
190716s9999 xx 000 0 und d
082
_a
TT-83#
100
_a
Thangam, Neelkanta
245
0
_a
Experimental study of classroom climate
942
_c
MF
_2
DDC
999
_c
24132
_d
24132