Interaktive Lehrer- und Schülerressourcen auf myNGconnect.com (GeoVideo, National Geographic photo gallery, maps and graphs, interactive Whiteboard GeoActivities)
With: Speech correction in the elementary school / Mabel F. Gifford. Sacramento : California State Dept. of Education, 1948. Bound together subsequent to publication
Interaktive Lehrer- und Schülerressourcen auf myNGconnect.com (GeoVideo, National Geographic photo gallery, maps and graphs, interactive Whiteboard GeoActivities)