Protecting landscape structure of historical villages in the National Parks in Estonia. How to use the topographic analysisNutt, NeleActa architecturae naturalis = Maastikuarhitektuurseid uurimusi2018 / p. 66-76 : ill https://www.ester.ee/record=b5183441*est https://www.maastikuarhitektuur.ee/acta/article/view/68/59