Animals in danger / L. Mellgren and M. Walker ; with black ill. by K. FredrikssonFlying saucers ; Man in space / Mellgren, Walker ; [tek.: Ken Fredriksson]The fuel crisis ; The Suez canal / L. Mellgren and M. Walker ; whit black ill. by K. FredrikssonHoudini ; Spies / L. Mellgren and M. Walker ; with black ill. by K. Fredriksson