URI
Notation
551.4
Caption
Geomorphology. Study of the Earth's physical forms
Including
Continents, islands. Landforms. Morphostructures. Mountains, valleys
See also
528.4Field surveying. Land surveying. Cadastral survey. Topography. Engineering survey. Special fields of surveying
911.2Physical geography
Broader class
551.1/.4  General geology
Narrower classes
551.44Speleology. Caves. Fissures. Underground waters
551.46Physical oceanography. Submarine topography. Ocean floor