̼ õ 1 31Ϻ 5 6ϱ ' ߴ: ƽþ ̼ ȸ 1960s-1990s' ֵȴ. ̹ ô 1960 1990 ȸ·ġ·ȭ ȭ ӿ ƽþ ̼ ϴ ȹ ̼, 챹ٴ̼, ̰̼, Ϻ ƽþƼͰ Ѵ.
ÿ ѱ, Ϻ, ߱, Ÿ̿, ȫ, ̰, ̽þ, εþ, ʸ, ±, ε, ̾Ḷ, į ƽþ 13 ֿ ۰ 100 ǰ 170 δ. ̼ ̹ ð 踦 Ѿ ȭ ƽþ ƹ氡 ̼ ҰѴٰ ϰ ִ.
' ߴ' ܺ()κ ڰ ƴ϶ ƶ µ ηκ ġ ڰ, ο µ, ο ü ǹѴٰ Ѵ.