Pimental, D <br/><br/>
Land, energy and water: the constraints governing ideal U.S. population size.  [electronic resource] 

 -  NPG forum series  1990 
 - 1-6 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Americas<br/>Asia<br/>China<br/>Conservation of Natural Resources<br/>Demography<br/>Developed Countries<br/>Developing Countries<br/>Economics<br/>Energy-Generating Resources<br/>Environment<br/>Environmental Pollution<br/>Asia, Eastern<br/>Food Supply<br/>Forecasting<br/>Geography<br/>North America<br/>Philosophy<br/>Population<br/>Population Density<br/>Population Dynamics<br/>Research<br/>Socioeconomic Factors<br/>Statistics as Topic<br/>United States<br/>Water Supply