TY - BOOK AU - Virmani, Arvind TI - Tax and contractual arrangements for the exploitation of natural resources T2 - World Bank staff Working Papers AV - HG 3881 .B35 no. 752 PY - 1985/// CY - Washington, D.C. PB - World Bank KW - Recursos naturales KW - Petróleo KW - Países en desarrollo ER -