Document Mobx97pOJojEpBeEV5xo2wZJj

REPRODUCED a t THE NATIONAL ARCHIVES o m et of IN D U S T R IA L H YO IBN B AND SANITATION .Hri.OKA!TDUi: t o A s s i s t a n t S u r - e o n G e r i r a i A. 11. ti:;.,, r., C h i e f , S c i e n t i f i c R e s e a r c h R i v i s i c h , U. P u b lic H? alti. S e r v i o e . ;t">*.rA\ 'W -L -w r>*i VA*. r- - 1* *' i,-y--* n' .. . Jm J*V *C.. X*i w2- ~W O ^0 *'O<* . R o to rs r.isec-.rch C o rp o ratio n , I "a r i l n : : t h e of lead in iv i. i l i - . i. . i : pr-iSUiO-w Ilici O T im s i D i i vis r i t t e n i n r e p l y to a l e t t e r from your . ? 1 - - -- J . w > <&*