Vom Heissluftballon zum Zeppelin

From the year :	1970      Publisher :  Schweizerisches Jugendschrifenwerk Zürich
Author(s) :	Text: Karl Grieder; drawings: Willi Schnabel
ISBN-number :	none
Remark :	Number 1020 from the series
Contents :	Who wants to read about a balloon that silently floats over the earth and learn the history of these special vehicles? This book tells about the men who were the first to battle against gravity and wind. This book also contains an explanation of the principle of balloonning.