int p_cost; /* dollars / product unit */
int p_nrndx; /* index into sect of natural resource */
int p_nrdep; /* depletion as a % of resource used */
int p_nlndx; /* index (NAT_?LEV) affecting production */
int p_nlmin; /* minimum lvl required */
int p_nllag; /* lag, mul by (lvl-nlmin)/(lvl-nlmin+nllag) */
int p_cost; /* dollars / product unit */
int p_nrndx; /* index into sect of natural resource */
int p_nrdep; /* depletion as a % of resource used */
int p_nlndx; /* index (NAT_?LEV) affecting production */
int p_nlmin; /* minimum lvl required */
int p_nllag; /* lag, mul by (lvl-nlmin)/(lvl-nlmin+nllag) */