বাৎসৰিকবাড়ি

বাৎসৰিক স্তৰ (Assamese)
1. GeologyA varve is an annual layer of sediment or sedimentary rock. The word 'varve' derives from the Swedish word varv whose meanings and connotations include 'revolution', 'in layers', and 'circle'. The term... from wikipedia.org