Quercus costaricensis Liebm. and the problern of multi-seeded acorns

by Stevens, George C., Matthew, Kathryn K.
Published 1989

Los Scolytidae (Coleoptera) de Costa Rica: Clave de la subfamilia Scolytinae, Tribu Corthylini

by Wood, Stephen L, Stevens, George C, Lezama, Humberto J
Published 1992

Los Scolytidae de Costa Rica: clave de géneros y de la subfamilia Hylesinae (Coleoptera)

by Wood, Stephen L, Stevens, George C, Lezama, Humberto J
Published 1991

Scolytidae (Coleoptera) de Costa Rica ll. Clave para la subfamilia Scolytinae, tribus: Scolytini, Ctenophorini, Micracini, Ipini, Dryocoetini, Xyleborini y Cryphalini

by Wood, Stephen L, Stevens, George C, Lezama, Humberto J
Published 1991