Journal Article 1 432 Fertilizers 867 Research Support, Non-U.S. Gov't 418 Soil 393 N762921K75 351 Nitrogen 351 Phosphorus 197 plus ... 27YLU75U4W 195 Population 172 Fertility 171 Demographic Factors 170 Sewage 166 Population Dynamics 165 Carbon 121 7440-44-0 120 Developing Countries 120 Manure 108 Family Planning 105 Review 100 Asia 86 142M471B3J 83 Carbon Dioxide 83 Economic Factors 78 Research Support, U.S. Gov't, Non-P.H.S. 78 Metals, Heavy 72 Population Characteristics 72 Developed Countries 71 Research Methodology 69 Soil Pollutants 66 Water Pollutants, Chemical 63 moins ...