Small Atlas of Polish Gwar Polskie published in 1967-1969 by the Ossoliński National Institute and the Publishing House of the Polish Academy of Sciences.
The set consists of 12 volumes of maps (covers 50x34cm) and 6 volumes of introductions and commentaries to maps (volumes I, II, VIII, XI, XII and XIII - Indexes and Sources)
Condition: atlases are dusty, slightly rubbed covers and yellowed. Maps in very good condition.