good reference or book on underpinning and earth retention

huangyhg

good reference or book on underpinning and earth retention
i haven't had much experience in earth retention, underpinning, and micorpiles.  i was in a meeting yesterday and there was a lot of talk about these issues.  does anyone know of a good book that talks about these topics and concepts?  i'm not very familiar with this type of stuff and would like to read up on it.