JEL-codes:F1F2 (search for similar items in EconPapers) New Economics Papers: this item is included in nep-sea and nep-tra Date: Written 2003-09-02 Note: Type of Document - Tex/WordPerfect/Handwritten; prepared on IBM PC - PC-TEX/UNIX Sparc TeX; to print on HP/PostScript/Franciscan monk; figures: included/request from author/draw your own