Chukovsky, Nikolai, author
Foreign Languages Publishing House , [Date of publication not identified]
Buku Teks
Ocioszynski, Tadeusz, author
Polonia Pub. House , 1960
Buku Teks
Academy Group, 1995
Buku Referensi
Arkady, 1975
Buku Teks
Tymieniecka, Anna-Teresa, author
Springer, 2012
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