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