<style face="normal" font="default" size="100%">Sex and grade differences in school anxiety: Study with a sample of Spanish high school students</style>

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0<style face="normal" font="default" size="100%">Sex and grade differences in school anxiety: Study with a sample of Spanish high school students</style><style face="normal" font="default" size="100%">Sex and grade differences in school anxiety: Study with a sample of Spanish high school students</style>