In the first poll that took place in 1997, Queen were at number 5 with "A night at the opera". The top 4 were as follows:

1 Pink Floyd : Dark side of the moon
2 The beatles : Sergeant Pepper's
3 Led Zeppelin : Led Zeppelin 4
4 Deep Purple : Made in Japan

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http://www2.rtbf.be/radio/radio21/classic/top100form.html