Report on the Standard Class sailplane competition for the OSTIV Trophy 1968 held in Leszno POLAND Authors L. de Lange The City College of the City University of New York Abstract Download full text Author Biography L. de Lange, The City College of the City University of New York http://www.sci.ccny.cuny.edu/~hindman/sumvitae.pdf Downloads PDF Published 2017-11-17 Issue Vol. 10 (1968) Section Comments