Jakubski, A.W. 1934 . The Polish Cochineal (Porphyrophora polonica L.). Historical study with special account of its role in the history of Europe and its culture. Wydawnictwo Kasy im Mianowskiego Warsaw 502 pp.
Jakubski, A.W. 1934 . The Polish Cochineal (Porphyrophora polonica L.). Historical study with special account of its role in the history of Europe and its culture. Wydawnictwo Kasy im Mianowskiego Warsaw 502 pp.