book suggestion for Farmer who is willing to learn/understanding benefits of raw

[Guest guest]

There is a local farmer who uses grains, does some grass/hay etc. I got

to talk to him, and he is puzzled and interested to even think that

there may be health benefits to having 100% grass-fed. He said he would

be open to listening/reading more info I can get.

Could you recommend a book/tapes etc that may address this issue. Also

any on how the soil fertility helps in the health of the cows and the

milk products.

Thanks

-Dan.