by Stevens, Richard G., Kalkwarf, Donald R.
Published in Environmental health perspectives (01.07.1990)

by Yonker, C. R, Frye, S. L, Kalkwarf, D. R, Smith, R. D
Published in Journal of physical chemistry (1952) (01.06.1986)

by Cope, Virgil W, Kalkwarf, Donald R
Published in Environmental science & technology (01.07.1987)

by Burton, F.G., Skiens, W.E., Gordon, N.R., Veal, J.T., Kalkwarf, D.R., Duncan, G.W.
Published in Contraception (Stoneham) (01.03.1978)

by Sullivan, M.F., Ruemmler, P.S., Kalkwarf, D.R.
Published in Drug and alcohol dependence (01.10.1976)

by Kalkwarf, D.R., Sikov, M.R., Smith, L., Gordon, R.
Published in Contraception (Stoneham) (01.11.1972)

by Perkins, R. W, Kalkwarf, D. R
Published in Analytical chemistry (Washington) (01.12.1956)