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Books about Kalpak:
The Kyrgyz Kalpak by Richard Hewitt and Risbek (Mar 5, 2009)
Kara-Kalpak: Webster's Timeline History, 1969 - 1991 by Icon Group International (May 14, 2010)
Ak Kalpak by Rysbek (2006)
Kalpak ve Kartal by Mucize Ozunal (2012)
Pirmais Latvijas nacionalo karaspeku virspavelnieks pulkvedis Oskars Kalpaks by Edvarts Virza
Control of trypanosomiasis in the Kara-Kalpak A.S.S.R. and ways of eradicating it =: Opyt bor'by s su-auru v Kara-Kalpakskoi... by P. A Lavrent'ev (1987)
Wiki information Kalpak:
Calpack, Calpac, Kalpac, Kalpak, or Qalpaq, Greek: Καλπάκι is a high-crowned cap worn by men in Turkey, the Balkans and throughout Central Asia and the Caucasus. The kalpak is used to keep the head warm in winter and shade out the sun during summer....
Karakalpakstan is an autonomous republic of Uzbekistan. It occupies the whole northwestern end of Uzbekistan. The capital is Nukus (Karakalpak: No'kis (Нөкис)). The Republic of Karakalpakstan has an area of 160,000 square kilometres (62,000 sq mi)....