Institution: | (1) Institute of Experimental Biology and Ecology, S.A.S., Sienkiewiczova 1, CS-814 34 Bratislava, Czechoslovakia;(2) Institute of Geography, S.A.S., Obrancov mieru 49, CS-800 00 Bratislava, Czechoslovakia;(3) Department of Geobotany, Comenius University, Mlynská dolina B-2, CS-842 15 Bratislava, Czechoslovakia |