Journal Article 780 Population 168 Developing Countries 160 Demographic Factors 151 Asia 137 Population Dynamics 134 Economic Factors 114 mehr ... Research Support, Non-U.S. Gov't 109 Eastern Asia 86 Population Characteristics 71 nematode 71 China 70 Research Methodology 68 Socioeconomic Factors 65 Developed Countries 63 English Abstract 60 Taiwan 60 Family Planning 57 root-knot nematode 50 population dynamics 46 Geographic Factors 45 Policy 45 Age Factors 43 Fertility 43 Population Policy 43 Social Policy 43 Glycine max 41 Migration 41 Population Growth 41 Americas 40 weniger ...