Earth Resources: A Continuing Bibliography with Indexes (issue 63) Published: 1989 Total Pages: 136 Get eBook
Earth Resources: A Continuing Bibliography with Indexes (issue 61) Published: 1989 Total Pages: 178 Get eBook
Earth Resources: A Continuing Bibliography with Indexes, Issue 50 Published: 1986 Total Pages: 158 Get eBook
Earth Resources: A Continuing Bibliography with Indexes (supplement 56) Published: 1988 Total Pages: 156 Get eBook