na INLIS000000000012638 20221105040157 0010-1118012638 221105 g 0 eng Economics and episodic disease : The benefits of preventing a giardiasis outbreak / Winston Harrington; Alan J. Krupnick and Walter O. Spofford Jr. HARRINGTON, Winston Washington : Resources for the Future, 1991 xxi, 202 p. : ill. ; 24 cm. 619 HAR e Incl. bibl. 619 DIARRHOEA EPIDERMIS DISEASES CONTROL KRUPNICK, Alan J. SPOFFORD JR, Walter O. 457/2001