Imagine a police force with no cars, radios, and no interaction.
These representatives had no back up, that they patrolled on foot
facing any kind of dangerous condition alone. Law enforcement…...
LiteratureВ ReviewВ 2 . 1В Introduction В InВ theВ
concreteВ sector, В thereВ areВ largeВ amountsВ ofВ concreteВ
beingВ producedВ aroundВ world. В TheВ quantityВ demandВ willВ