If not particularly looking for free ebooks, I guess this amazon link also could be another choice.
https://www.amazon.com/law-partnerships-private-corporations/dp/B007F6GSL2

Author seems Philippine based, that may be a reason my usual ebook resources are not showing any appropriate results. Still, keep on trying.

Edit:
Before amazon showed : Out of Print--Limited Availability. But now shows Currently unavailable.
OP bought one ?