Large image view: Tracing marijuana to its roots
ÃÛÌÒÓ°Ïñ photo by Marmian Grimes
Matthew Wooller uses a microbalance to weigh a sample capsule full of benzoic acid.
ÃÛÌÒÓ°Ïñ photo by Marmian Grimes
Matthew Wooller uses a microbalance to weigh a sample capsule full of benzoic acid.