https://grn.site/book/part-1-why-travel/2026-10-26T00:40:52+00:00https://grn.site/book/part-2-the-world-as-it-is/2026-10-26T00:40:52+00:00https://grn.site/book/part-3-the-idea-and-the-vision/2026-10-26T00:40:52+00:00https://grn.site/book/part-4-building-and-running-the-network/2026-10-26T00:40:52+00:00https://grn.site/book/part-5-economics-governance-and-law/2026-10-26T00:40:52+00:00https://grn.site/book/part-6-the-education-and-culture-of-travel/2026-10-26T00:40:52+00:00https://grn.site/book/part-7-the-road-ahead/2026-10-26T00:40:52+00:00