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Marine Permian of England - JNCC
jncc.defra.gov.ukThe Permian marine rocks of England 4 Figure 1.1 The Zechstein Sea and its environs. After Smith (1980a, fig. 1)
The Permian marine rocks of England 4 Figure 1.1 The Zechstein Sea and its environs. After Smith (1980a, fig. 1)