545,749 PROSPECTS Prospects for immunological intervention in human schistosomiasis : Proceedings of a meeting of the Scientific Working Group on Schistosomiasis, UNDP / WORLD BANK / WHO Special Programme [.. . ] held in Geneva, 26-28 May -1986. -Basel : Schwabe and Co ltd. Publ., 1987. -117 s. : il., wykr. ; 24 cm (Acta Tropica, ISSN 0001-706-X ; vol. 44, suppl. 12)