This volume contains papers presented to the 14th meeting of the German Working Group Multicriteria Decision held on September 22-27, 1991 in Riezlern, Austria at the guesthouse of the Johann Wolfgang Goethe-University Frankfurt/Main. The papers mainly focus at applications in structural optimization problems in engineering and other fields, presentation of software packages and decision systems, and theory of vector optimization and approximation and they aim at interchanging mathematical tools and ideas among mathematicians and engineers.