International Physics Olympiads 1967-2011 Part 1 - I - XXIV- IPhO 1967-1993 -OMEGALEPH

International Physics Olympiads 1967-2011 Part 1 - I - XXIV- IPhO 1967-1993 -OMEGALEPH ( ENGLISH VERSION )

LINK ORIGINAL EN LA WEB FORMATO PDF
http://omega4edu.org/uploads/3/4/1/7/34175156/ipho1967-1993-part_1-i-xxiv.pdf
LINK ALTERNATIVO 
http://www.mediafire.com/download/8t95xz9c4udrr60/ipho1967-1993-part_1-i-xxiv.pdf