American Geological Institute. (1984). Investigating the earth: Teacher's manual (4th ed.). Houghton Mifflin Co..
Successfully copied to clipboard
Copying to clipboard failed
Dyfyniad Arddull Chicago
American Geological Institute. Investigating the Earth: Teacher's Manual. 4th ed. Boston: Houghton Mifflin Co., 1984.
Successfully copied to clipboard
Copying to clipboard failed
Dyfyniad MLA
American Geological Institute. Investigating the Earth: Teacher's Manual. 4th ed. Houghton Mifflin Co., 1984.
Successfully copied to clipboard
Copying to clipboard failed
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.