Simplicity 9182 vintage sewing pattern, dated 1979. 

Misses' Skirt and Blouse: 

Skirt with fly front zipper, tucks and waistband has front button closing under inverted pleat, buttonhole pockets and back kick pleat.  Top-stitched blouse with yoke, forward shoulder seams, back tucks and front band button closing has set-in sleeves.  Inside pockets with buttoned flaps and collar and collar band.  V. 1 with long sleeves and buttoned turn-back cuffs has optional self tie.  V. 2 has short sleeves with turn-back cuffs. 

Size  12:

Bust  34 inches / 87 cm

Waist 26 1/2 inches / 67 cm

Hip    36 inches / 92 cm

Pattern is UNCUT and factory folded. Envelope has light shelf wear and paper tanning.

More '70s patterns here:

http://allthepreciousthings.com/collections/1970s