Torkar, K. M. books & textbook
Scientific Ballooning (1995)
Riedler, W. Torkar, K. M. Torkar, K.M.
Pergamon Pr /1995-07-01 Paperback / 122 Pages
isbn-10: 0080426530 / isbn-13: 9780080426532
Balloon Technology and Observations
Riedler, W. Torkar, K. M. Torkar, K.M.
Pergamon Pr /1993-12-01 Paperback / 220 Pages
isbn-10: 0080424732 / isbn-13: 9780080424736
