It is widely believed that the employment of children underground in coal mines ended in 1842. This book, in contrast, shows that young people remained an impor

It is widely believed that the employment of children underground in coal mines ended in 1842. This book, in contrast, shows that young people remained an impor

amount of new knowledge every day. We have to acknowledge that even the smartest people among us are incapable of familiarizing himself with all these new data.