Colleagues, Which suppliers in US carry Butvar-90 and B-72? You'd think after all these years I would know but ......... Thanks, .....Julie Julia Golden, Curator Department of Geoscience, 121 TH University of Iowa Iowa City, IA 52242 USA tel: 319-335-1822 fax: 319-335-1821 e-mail: j-golden at uiowa.edu