Beautiful genealogy of value-chain economics since the 1970s https://t.co/SMKPAD18iU https://t.co/NuDsl46Mdg
RT @MacdonaldUkah: Glad I saw this before dawn! twitter.com/Nairametrics/s…
November 27, 2020
RT @MacdonaldUkah: Glad I saw this before dawn! twitter.com/Nairametrics/s…