Jean Pierre Le Gorgeu
Bisztray, Ádám.
Bahia (Brazil : State). Coordenação da Produção Mineral.
Lis Weise
Henrik Nordbrandt
Karl Kupisch
Christian Deydier
Maria Carmela Coco Davani
Sebastian Goeppert
Raphael Valentino Sobrinho
José María Neila y Neila
International Technical Scientific Meeting on Space (14th 1974 Rome, Italy)
Ivar Lo-Johansson
Ibon Sarasola
Ryszard Cheliński
