TY - GEN AU - Sturm, Fletcher J. TI - Trading natural gas: cash futures options and swaps SN - 0878147098 U1 - 332.64/42285 PY - 1997/// CY - Tulsa, Okla. PB - PennWell Books,1997 KW - Gas industry KW - Finance KW - Commodity exchanges KW - Futures market KW - Options (Finance) KW - Swaps (Finance) N1 - Includes index ER -