By C. CLAIBORNE RAY
A backpack’s load should not exceed 10 to 15 percent of the child’s weight, according to a review article.
Published: October 14, 2014 at 12:00AM
from NYT Science Read the full article here: https://ift.tt/ZWN96t
via IFTTT
By C. CLAIBORNE RAY
A backpack’s load should not exceed 10 to 15 percent of the child’s weight, according to a review article.
Published: October 14, 2014 at 12:00AM
from NYT Science Read the full article here: https://ift.tt/ZWN96t
via IFTTT