Clause 4.6 [Co-operation] in the FIDIC Yellow Book 1999 vs 2017By wisdomwaveshub.com / September 2, 2023 79 / 100 Powered by Rank Math SEO SEO Score It serves as a contractual foundation for how multiple parties involved in a construction project interact. Membership Required You must be a member to access this content. View Membership Levels Already a member? Log in here