Book Review: Exclusive Use in an Inclusive Environment: The Meaning of the Non-Appropriation Principle for Space Resource Exploitation, by Philip De Man. (Series: Space Regulations Library. vol - Air and Space Law View Book Review: Exclusive Use in an Inclusive Environment: The Meaning of the Non-Appropriation Principle for Space Resource Exploitation, by Philip De Man. (Series: Space Regulations Library. vol by - Air and Space Law Book Review: Exclusive Use in an Inclusive Environment: The Meaning of the Non-Appropriation Principle for Space Resource Exploitation, by Philip De Man. (Series: Space Regulations Library. vol 42 4/5 Air and Space Law