JY 121-1988
Original coil (trial) (English Version)

Standard No.

JY 121-1988

Language

Chinese, Available in English version

Published By

Professional Standard - Education

Status

Withdraw

Replace By

JY 121-1979

Latest

JY 121-1979

JY 121-1988 history

• 1970 JY 121-1988 Original coil (trial)
• 0000 JY 121-1979