EB19.R19 Report of the Study Group on the Ecology of Intermediate Snail Hosts of Bilharziasis The Executive Board
1. NOTES the report of the Study Group on the Ecology of Intermediate Snail Hosts of Bilharziasis : 1
2 . THANKS the members of the Study Group for their work.
Handb. Res., 3rd ed., 1.7.4.2 Fourth meeting, 16 January 1957