000
00277nam a2200097Ia 4500
008
190716s9999 xx 000 0 und d
082
_a
TH-58#
100
_a
Hari Prasad Singh
245
0
_a
Some classes of estimators for certain parameters in finite populations
942
_c
MF
_2
DDC
999
_c
25004
_d
25004