TY - BOOK ID - 127659820 TI - The expanding circle : ethics and sociobiology. PY - 1981 SN - 0374151121 PB - New York (N.Y.) : Farrar, Straus and Giroux, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:127659820 AB - ER -