title: Population trends: a historical review and projection as to its effects on Veterinary Medicine.
mesh_terms: D000349:Africa; D000818:Animals; D001208:Asia; D001723:Birth Rate; D005060:Europe; D005544:Forecasting; D006801:Humans; D009026:Mortality; D009656:North America; D011158:Population Growth; D013020:South America; D014730:Veterinary Medicine