Cranberry DiseasesC. L. Shear, Bureau of Bureau of Plant Industry, U. S. Department of Health and Human Services U.S. Department of Agriculture, Roger Chambers · First published 2018Open the Tome
Nomenclature of the Apple : Heirloom Apple VarietiesU. S. Department of Health and Human Services U.S. Department of Agriculture, Bureau of Bureau of Plant Industry, Roger Chambers · First published 2018Open the Tome
Indigenous peoples/ethnic minorities and poverty reductionRoger Plant · First published 2002Open the Tome
Sachsen-AnhaltRenate Rössing, Hans Dietrich Genscher, Roger Rössing, Patrick Plant · First published 1996Open the Tome
Rural education in Boyaca, ColombiaRoger Plant · First published 1972 · Latest edition 1977Open the Tome