Our natural resources /
Kircher, Harry B.,
Our natural resources / Harry B. Kircher, P. E. McNall ; consultant, Donald L. Wallace. - Fourth edition. - xviii, 371 pages : illustrations ; 24 cm.
Authors names in reverse order in previous ed. Includes index. Previous ed. entered under P.E. McNall.
Natural resources--United States.
Conservation of natural resources--United States.
Our natural resources / Harry B. Kircher, P. E. McNall ; consultant, Donald L. Wallace. - Fourth edition. - xviii, 371 pages : illustrations ; 24 cm.
Authors names in reverse order in previous ed. Includes index. Previous ed. entered under P.E. McNall.
Natural resources--United States.
Conservation of natural resources--United States.
