books social and economic factors affecting fertility
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# On the factors affecting economic production
# Factors influencing social growth
# Factors affecting the country's economy
# Social factors in fertility
# Social development and fertility
# Fertility and social classes
# About the climate and the factors affecting it
# On the factors affecting the ecosystem
# About the factors affecting the climate
# Factors influencing the learning process
# Factors affecting learning improvement
# Influencing factors on psychology
# On the factors affecting the distribution of the population
# Factors affecting perception
# Factors affecting individual differences
# On the factors influencing the problem of divorce
# Factors influencing adolescents' emotions
# Factors affecting crop production
# Psychological factors that influence personality
# Influencing factors in kindergarten
