Report of investigations / Bureau of Economic Geology, The University of Texas at Austin.

no.66-68 1970; no.68-73 (Sept 1970-1971); no.70-73 1970-71; no.69 1971; no.74-77 1972; no.76-81 (1972-74); no.79 1974; no.78-87 1974-77; no.85; no.87-88 (1977); no.88-89 (1977); no.89 (1977); no.91 (1978); no.92-96 (1978-79); no.92-99 1978-79; no.97-100 (1979-80); no.101-105 (1980); no.100-108 1980-81; no.106-110 (1980-81); no.109-117 1981-82; no.111-116 (1981-82); no.117-120 (1982); no.118-124 1982; no.121-123 (1982); no.124-128 (1982); no.125-131 1982-83; no.129-134 (1982-83); no.132-137 1983; no.135-138 (1983-84); no.138-141 1984; no.139-142 (1984); no.142-146 1984-1985; no.143-146 (1985); no.147-150 1985-1986; no.151 1986; no.152-156 (1986); no.152-155 1986; no.156-161 1986; no.157-161 (1986); no.162-168 (1987); no.169-173 (1988); no.169-171 1988; no.172 1988; no.173-178 1988; no.174-179 (1988); no.177-182 1988-89; no.180-183 (1989); no.183-188 1989; no.184-187 (1989); no.188 (1989); no.189-192 1989-1990; no.193-196 1990; no.194-196 (1990); no.198-201 (1991); no.202-205 (1991-92); no.206-210 (1992); no.211-215 (1993-94); no.216-220 (1994); no.221-225 (1994); no.226-230 (1995); no.231-235 (1995); no.236-239 (1995-1996); no.240 (1996); no.241-242 (1997); no.243-246 (1997); no.247-250 (1998); no.251-253 (1998); no.254-256 (1999); no.257-261 (1999-2000); no.262-265 (2001-02); no.266-270 (2002-04); no.271 (2005)