Not an in depth book but onew that give explaination to things using science. a pretty good book in my opinion. some pepl won't like it because its the first one I've read that shows why things like flushing plants at the end is a waste of time, etc. And thats exactly what he says. No beating arund the bush so to speak...lol!
The book is: Marijuana Cultivation Reconsidered by Read Spear