Биология. Урок№19. Состав крови Форменные элементы
Тема урока: Состав и функции крови. Форменные элементы крови:
эритроциты, лейкоциты, тромбоциты.
учитель биологии Кажгалиева Салтанат Жаскайновна
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4 months ago 02:30:07 1
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4 months ago 00:26:10 1
4 months ago 00:30:45 1
