open access journals and books
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Articles published open access are peer-reviewed and made freely available for everyone to
ແທັກ: open access articles
ປື້ມຄູ່ມືການຄ້າເສລີ
ຜູ້ທີ່ສະ ເໜີ, ບໍ່ຄວນຖາມສິ່ງໃດໃນການຕອບແທນ
ຜູ້ທີ່ໄດ້ຮັບ, ບໍ່ຄວນຈະໃຫ້ສິ່ງໃດໃນການຕອບແທນ