Need translation for Czechoslovakia Aeroclub pin

[jvw734]

Picture not the best but text on pin is  "SLOVENSKY AEROKLUB SVAZARMU ZA ROZVOJ PARASUTIZMU 1947-1977" I tried translating on Google but it seems a literal translation does not make sense. Also would SLOVENSKY be Czechoslovakia. Thank you for any help. 

[Preppy Picker]

It’s the 30th anniversary of the Slovenian Aéroclub training members of the Svazarmu in para jumping.

[Johnston]

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[jvw734]

Thanks Preppy just what I needed.   Joe