Document xzmvmbwVpJwg431pE2QzdkD7J

./ 3^66 . Fxcroft Lane Milwaukee, VI 53217 July 16 , 1976 Monsanto 800 H. Linberg Boulevard St. Louis. Missouri 63166 * ' Dear Sirs: I am doin a one year scince fair project for the Marquette Southeastern Science Fair and Junior Academy of Science . The purpose of y project is to show the relatively low toxitlty of American made, polychlorintedbiphenyls to foreign made PCB's containing th-impurity dibene.ofurans. Please send e the.nrice list on PCB'c and a list of possible foreign sources. Also snd me operational definitions on the detection of PCB's and dibenssofurans. I am enclosing a self adressed envelope vrith the proper nostage assigned. y/fctCiJASincere3.y yours, AiXM Michael J. Keller NEV 036,53