échantillonnage (1) méthodologie (1) histoire (1) âge (1) Colombie (1) History (1) Qualitative research (1) Children (1) Methodology (1) Methods (1) Nineteen nineties (1) First pregnancy (1) Technique (1) Work (1) Women (1) Sexual behavior in animals (1) Sampling (1) Research (1) Population (1) Periodicals (1) Indigenous peoples (1) Months (1) Methodology (1) Menarche (1) Life (1) Learning, Psychology of (1) History (1) Health promotion (1) Health (1) Example (1)