Subject
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Family planning
6
Fertility, Human Economic aspects
6
Fertilizers Prices
6
Mortality
6
Nutrient pollution of water
6
Sewage sludge as fertilizer Law and legislation
6
United States Population
6
Agricultural chemicals Management
5
Ammonium nitrate Safety regulations
5
Fertilizer industry Accidents
5
Groundwater Quality
5
Human beings
5
Irrigation water Quality
5
Pesticides Environmental aspects
5
Phosphates
5
Phosphatic fertilizers Environmental aspects
5
Population
5
Potatoes Fertilizers
5
Sewage sludge as fertilizer Health aspects
5
Agriculture
4
Birth intervals
4
Corn Fertilizers
4
Economic development
4
Fertility Effect of drugs on
4
Fertility, Human Social aspects
4
Fertilizers Law and legislation
4
Human reproduction
4
Hydrology
4
Infertility, Female
4
Irrigation Equipment and supplies
4
Manures
4
Mines and mineral resources
4
Nitrogen fertilizers Control
4
Pesticides
4
Population forecasting
4
Population research
4
Premature infants
4
Sewage sludge Environmental aspects
4
Sex
4
Soil amendments
4
Soils
4
Vegetable gardening
4
Vegetables Fertilizers
4
Abortion
3
Africa, Sub-Saharan
3
Age distribution (Demography)
3
Agricultural chemicals
3
Agricultural chemicals Environmental aspects
3
Agriculture Economic aspects
3
Aquifers
3
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