Mitchner, E. Alyn, 1937- One world / by E. Alyn Mitchner and R. Joanne Tuffs. - Edmonton : Reidmore Books, �1989. - 147 p. : ill. en coul., cartes en coul ISBN: 0919091628 9780919091627 Nat. Bib. No.: C-88-091419-X Subjects--Topical Terms: Human geography.Human ecology. LC Class. No.: D811.5 / M58