Mig-21 units in Vnam war

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i just have a quick glance at " mig21 units in Vnam war".

impression..

- most mig21 remained in bare metal or light gray color befoer 1972.
- few camo mig21 noted since 1972, in 921st and 927th reg.
- mig-21PFM is widely used in vnam war.

in contarst, " A-7 units in vnam war", the paint scheme is much colorful.. nice looking.