20
0:14
1 ਸਪੀਕਰ
1 ਚੈਪਟਰ
5 ਰੇਖਾ- ਖੰਡ
ਸਪੀਕਰ
ਚੈਪਟਰ
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0:00ਚੈਪਟਰ 1: Number 21. 14s · Speaker 1
Number 21. How many computers will your laboratory need? Probably around 50. Every other week. The keyboards were included.