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9  Articles
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Background: School textbooks constitute a valuable material of investigation in the history of education, which has developed in many disciplines, in connection with their history. In history of mathematics education, some studies are based on a qualitati... see more

Los sistemas eficientes de distribución de aguas están siendo cada vez más reconocidos por su potencial para incrementar la agricultura sostenible en regiones áridas y semiáridas al sur de Europa. En España, los sistemas de riego por aspersión han sido ad... see more

Introduction: Previous studies have shown that statin use before coronary surgery decreases the mortality and morbidity. This benefit was not clearly detected in isolated valve surgery. The aim of this study was to assess the effect of preoperative statin... see more

Older citizens of Botswana are experiencing a devaluation of their personal worth, both in the family and in society. Within a setting of generalized poverty, the elderly have a unique age-induced form of destitution - the gerontic deprivation trap. Power... see more

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