szerkesztette, Gyalog László és Horváth István ; írta, Horváth István ... [and others] = Geology of the Velence Hills and the Balatonfő : explanatory book of the geological map of the Valence Hills (1:25 000) and the geological map of pre-Sarmatian surface of the Balatonfő-Velence area (1:100 000) / edited by László Gyalog [and] István Horváth ; written by István Horváth ... [and others]