POFIS - Catalog - Authors - Dušan Kállay

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Nature Conservation - Fishes - Zingel Issue number
158 Date of issue
07.09.1998

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Nature Conservation - Fishes - European mudminnow Issue number
157 Date of issue
07.09.1998

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Mushrooms - Catathelasma imperiale Issue number
130 Date of issue
17.09.1997

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Nature Conservation - Mushrooms - Morel Issue number
129 Date of issue
17.09.1997

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Nature Protection - Mushrooms (Boletus aereus) Issue number
128 Date of issue
17.09.1997

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Celebrated Persoanlities II - Chatam Sófer Issue number
47 Date of issue
12.12.1994

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75 Years of Comenius University Issue number
42 Date of issue
18.10.1994

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Bratislava (Definitive stamp) Issue number
25 Date of issue
31.12.1993