document | Linguistic environment of Lumbard language or the linguistic hinterland of Alps and Altaitalia Language Dominion (Lombardia-3c)
The AIS/CNR map of year 1977 is a summary of indigenous languages census compiled by the Sprach und Sach Atlas italiens und der südschweiz (AIS) edited by 1928-1956 here described by his table of dialect types, with a sample of isoglosse n.7 or the “milk line” and listing the first 13 isoglosses.