00653cam a2200205 4500 46164774 TxAuBib 20050714120000.0 ||||||s1942||||||||||||||||||||||||und|u 42024085 TxAuBib Cohen, Morris] [from old catalog. The Broker : a study of dealer's profits, broker's commissions and the trend of regulation. New York, 1942. 39 p ; 21 cm. 20050125. Brokers United States. [from old catalog]. Stock exchanges United States. The broker-dealer-customer problem.