TY - DATA AU - Reddy V N TI - Contributions to the the theory of optimum utilisation of auxiliary information in survey sampling U1 - 000sa.5 CY - 19751975 KW - Auxiliary information KW - Survey sampling UR - http://192.168.143.32:8080/jspui/bitstream/10263/3618/1/TH88.pdf ER -