\input zb-basic \input zb-ioport \iteman{io-port 04196001} \itemau{Harborth, Heiko; Kemnitz, Arnfried} \itemti{Integral representations of graphs.} \itemso{Contemporary methods in graph theory. In honour of Prof. Dr. K. Wagner, 359-367 (1990).} \itemab [For the entire collection see Zbl 0709.00011.] This paper gives a survey of known results concerning representation of graphs in Euclidean spaces in such a way that each edge has integer length. This is always possible if vertices may have any type of coordinates. Partial results are indicated for least diameter (maximal edge length) representations, bounded length representations with bounds 1,2 or 3, and smallest planar m-regular graphs with uniform unit edge- length planar representations. Several open problems are indicated. \itemrv{F.Plastria (Brussels)} \itemcc{} \itemut{integral edge-length; survey; representation of graphs} \itemli{} \end