GREAT <GAMI> TO BUY STANDARD<SRD> UNITS' ASSETS Great American Management and Investment Inc said its 80 pct-owned subsidiary agreed to buy certain assets of two subsidiaries of Standard Oil Co, for 40 mln dlrs and the assumption of certain liabilities. Great American Industrial Group Inc agreed to acquire all the U.S. and United Kingdom assets of Pfaudler Co and the stock of certain Brazilian, Mexican, and West German subsidiaries of Kennecott Mining Corp, it said. Pfaudler and Kennecott are subsidiaries of Standard Oil.