by Colin McEwan ... [et al.] ; by Colin McEwan ... [et al. by Colin Barrow ... [et al.] by Galen Gruman ... [et al.]. by Colin Barrow ... [et al. by Galen Gruman ... [et al. by Irving Rein ... [et al.]. by Anis Koubaa ... [et al.]. by Helen Palmer ... [et al.]. by Irving Rein ... [et al.