''the Wall''the Wall'de R. David SimpsonEdiciones (1)'the Wall' (2020)Independently Published · inglés · ISBN 9781657240148Más obras de R. David SimpsonPProductivity in natural resource industriesProductivity in natural resource industriesEEcosystem Function and Human ActivitiesEcosystem Function and Human ActivitiesAArido AmericanoArido Americano