F. Johns

Marine environmental assessment of the Estuary and Gulf of St. Lawrence

L. White, F. Johns, 1997 .

Concentrations of krypton-85 in air

T. Gesell, Janet A. Adams, W. Lowder, 1972 .

Radiochemical analytical procedures for analysis of environmental samples

E. Bretthauer, F. Johns, P. B. Hahn, 1979 .