Many of the hunting, fishing, and gathering rights guaranteed in treaties which had remained essential to the indigenous economy were abrogated by a combination of hunting regulations, mobility or "pass" laws, and the depletion of wild resources.
Since time immemorial, forests and their associated products have remained essential in sustaining livelihoods (Mamo et al. 2007; Bwalya 2013; Mukul et al. 2016), particularly for the people of forest-dependent communities, who live in abject poverty (Shackleton et al. 2007; Kabubo-Mariara 2013).
Two decades ago, a mathematician named Andrew Hodges published "Alan Turing: The Enigma," which is one of the finest scientific biographies ever written, and has remained an essential resource for all subsequent accounts of Turing's life.
But behind those details was a portrait of a genius, a book that since its publication in 1971 has remained an essential study of a founding father of modern theater.
It explains why The Moscow Times has remained an essential newspaper not just for Moscow's foreign community of diplomats, business people, students and journalists, but also for many independent-minded Russians.
Extracting practical size subsets for experimentation has remained an essential step in the design of combinatorial libraries.
An efficient interferon system is required for controlling viral infections, and up to now, IFN-α has remained an essential part of anti-HCV treatment.
Since its introduction in 1949, legal aid has sought to provide access to justice for those of limited means and has remained a defining and essential feature of our democracy.
From the end of the national state in the Holy Land in 70 ce, Jewish religion, despite the increasing recognition of personal significance, has remained characterized by its essential ethnic concern.
