A zoologist and a biochemist go out into an oilfield with a cameraman and filmmaker to observe and study the elusive oil gobblers.
Lubomír Beneš
Bauer
Jiří Němec
Mráz
Ivo Kašpar
Soukup
Jan Rokyta
Navrátil
Emil Nedbal
Nedbal
Čestmír Řanda
Commentary (voice)
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