Holger Rogall

<body> <h1>Holger Rogall</h1> <p><a href="https://holgerrogall.wixsite.com/holger-rogall/dokumente/rogall-sun-wind-and-energy.pdf">http://holger-rogall.de/dokumente/rogall-sun-wind-and-energy.pdf</a> </p> </body>