TY - BOOK ED - India. National Sample Survey. Agricultural Statistics Division TI - surveys in development areas: Report on the pilot survey for estimation of area brought under improved agriculturalpractices, Andhra Pradesh, Khirif, 1958-59 U1 - 000SC:300(54) PY - 1962/// CY - New Delhi PB - Author KW - Andhra Pradesh KW - Crop estimation KW - Sample survey ER -