Donald G. Mikulic and Joanne Kluessendorf. Pleistocene geology of the Marathon County area of central Wisconsin / William N. Mode and John W. Attig. Petrochemistry of Precambrian granitic rock from northeastern Wisconsin / Gregory Mursky and William Bailey. Seismic refraction measurements in bedrock of the Trout Lake region of Vilas County, northern Wisconsin / Emeka E. Okwueze and C.S. Clay. Seasonal geochemistry of two tufa-depositing springs in southwestern Wisconsin / Sara A. Heller