TY  - JOUR
A1  - El-Badry, M.A. 
T1  - Failure of enumerators to make entries of zero: Errors in recording childless cases in population censuses
Y1  - 1961
DO  - 10.1080/01621459.1961.10482134
JF  - Journal of the American Statistical Association 
VL  - 56
IS  - 296

ER  -