Montana physicians interested in recommending medical marijuana (cannabis) to their patients will find a web resource at the site Montana Medical Marijuana Science.
Medical MJ reference websites
Possibly the most respected of the many, many medical marijuana websites is that maintained by The International Association of Cannabis as Medicine.
The University of California operates a highly respected Center for Medical Cannabis Research. Their website is an excellent compendium of some of the best research available to physicians.
Other medical MJ info around and about the Web
[less rigidly science but still credible sites]
Recommended books you can order
An excellent, though slightly dated bibliography on the subject of Medical Cannabis (Marijuana) is a component of the Oregon Guide to Medical Marijuana.