%V 21-23 %J Acta climatologica %L acta16815 %T Comparing the annual course of thunderstorm frequency in Hungary with data obtained a hundred years ago : to the memory of professor Peczely %A SzentpĂŠteri MĂĄria %K Ăghajlattan, CsapadĂŠkeloszlĂĄs %P 73-78 %D 1989 %C Szeged %O Bibliogr.: 78. p. ; ill.