por Haywood, John [autor] | Haywood, John. Atlas of world history | Catchpole, Brian [autor] | Hall, Simon [autor] | Barratt, Edward [autor] | Marcos, Olga [traductor].
por Room, Robin [autor] | Room, Robin. Cannabis policy : moving beyond stalemate | Fischer, Benedikt [autor] | Hall, Wayne, 1951- [autor] | Lenton, Simón [autor] | Reuter, Peter [autor] | Rossi, Diana [autor] | Corda, Raúl Alejandro [autor] | Feilding, Amanda [editor de la compilación].