TY - BOOK ID - 149028579 TI - Perception, opportunity and profit studies in the theory of entrepreneurship. PY - 1979 SN - 0226437736 9780226437736 PB - Chicago, Ill., DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:149028579 AB - ER -