1834 (Libr. Useful Knowl.) III. Math. Geogr. i. 1/2 Deceived by the plain-like appearance of the earth..they conceived it to be an extensive plain meeting the heavens on every side.
1882 4 72 The country on leaving the latter river begins gradually to lose its plain-like character, becoming more undulating and rugged.
1930 75 232 The glaciers probably covered the plain-like valleys as well as the big plateaux in the shape of broad sheets of ice.
1982 79 4481/1 Walther Penck..and others..have maintained that plain-like erosion surfaces are formed not by downwearing but by backwearing through the retreat of steeper slopes .