TY - RPRT TI - Cross tolerance between LSD and psilocybin. AU - H ISBELL AU - A B WOLBACH AU - A WIKLER AU - E J MINER PY - 1961 DO - 10.1007/bf00407974 UR - https://pubmed.ncbi.nlm.nih.gov/13717955/ ID - 13717955 ER -