by Rivera, R.L, Freeman, C.E
Published in The Southwestern naturalist (10.12.1979)

by Freeman, C.E., Howard, A.G.
Published in Talanta (Oxford) (30.01.2005)

by Stiles, F.G, Freeman, C.E
Published in Biotropica (01.06.1993)

by Petit, Sophie, Freeman, C. Edward
Published in Biotropica (01.06.1997)

by Howard, A.G., Freeman, C.E., Russell, D.W., Arbab-Zavar, M.H., Chamberlain, P.
Published in Analytica chimica acta (25.12.1998)

by Marks, M. J., Laughner, M. K., Freeman, C. E.
Published in Journal of applied polymer science (28.11.1997)

by Freeman, C.E
Published in Amer Midland Natur (1973)

by Freeman, C.E
Published in Southwest Natur (1973)

by Freeman, C.E
Published in Diss Abstr Sect B (1969)

by Freeman C.E, Worthington R.D, Jackson M.S
Published in Biotropica (01.12.1991)

by Scogin, Ron, Freeman, C.E.
Published in Biochemical systematics and ecology (01.01.1987)

by Freeman, C.E, Wilken, D.H
Published in American journal of botany (01.11.1987)

by Freeman, C.E. (University of Texas at El Paso, TX), Worthington, R.D
Published in Biotropica (01.09.1989)

by Freeman, C.E, Rice, E.R
Published in Fla Agr Exp Sta Circ S (1972)

by Freeman, C.E. (University of Texas at El Paso, El Paso, TX), Head, K.C
Published in The Southwestern naturalist (01.12.1990)

by Gascho, G.J, Freeman, C.E
Published in Fla Everglades Exp Sta Mimeo Rep (1970)

by Freeman, C.E, Reid, W.H, Worthington, R.D
Published in American journal of botany (01.11.1985)

by Elisens, W.J, Freeman, C.E
Published in American journal of botany (01.07.1988)

by Scogin, R, Freeman, C.E
Published in Aliso (13.12.1984)

by Lammers, T.G, Freeman, C.E
Published in American journal of botany (01.11.1986)