extern void pay_reserve(struct natstr *, int);
/* produce.c */
extern void produce(struct natstr *, struct sctstr *);
extern void pay_reserve(struct natstr *, int);
/* produce.c */
extern void produce(struct natstr *, struct sctstr *);
extern double prod_materials_cost(struct pchrstr *, short[], int *);
extern double prod_resource_limit(struct pchrstr *, unsigned char *);
extern double prod_eff(int, float);
extern double prod_materials_cost(struct pchrstr *, short[], int *);
extern double prod_resource_limit(struct pchrstr *, unsigned char *);
extern double prod_eff(int, float);