00496nam a22001457a 4500 OSt 250723b |||||||| |||| 00| 0 eng d 333.91317 P91E Poiba Ravi Prasad An Economic Analysis of Ground Water Extraction and Water Use Efficiency of Rice and Maize Cropping System in Andhra Pradesh and Bihar: A Comparative Study Pusa Deptt. of Agril.Economics 2024 269p Ph.D.(Agril.Econo.) T ddc 48529 48529 0 0 ddc 0 0 RAU RAU 2025-07-23 0 333.91317 P91E 84257 2025-07-23 2025-07-23 T