International mathematical olympiads, 1978-1985 and forty supplementary problems
Klamkin, Murrary
International mathematical olympiads, 1978-1985 and forty supplementary problems - WAshington The Mathematical Association of America 1999
088385631X
International mathematical olympiads, 1978-1985 and forty supplementary problems - WAshington The Mathematical Association of America 1999
088385631X