22-05-2017
Biology

contestada

Vaccinations were first used in what time period?
Select one:
a. 200-400 BC
b. 1000-1200
c. 1700-1800
d. 1990-2000

Respuesta :

DJVIPER DJVIPER

22-05-2017

The correct answer is C) 1700-1800. Hope this helps.

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Аноним Аноним

22-05-2017

c 1700-1800 hope this helps

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