00290nam a2200109 a 450000500170000008200160001710000140003324500680004725000110011526000380012630000160016420251203092347.0  a304.6,bvat  aVatsyayan  aVital statistics and population problems: with 1985 census data  a2nd ed  aMeerut: Kedar Nath Ram Nathc1986  a260p.c22cm