Bulletin - United States National Museum (G.P.O, 1921)

Bulletin - United States National Museum (G.P.O, 1921)

Bulletin - United States National Museum (G.P.O, 1921)

Bulletin - United States National Museum (G.P.O, 1950)

Bulletin - United States National Museum (G.P.O, 1950)

Bulletin - United States National Museum (G.P.O, 1950)

Bulletin - United States National Museum (G.P.O, 1950)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1950)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1950)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1950)

The unstalked crinoids of the Siboga expedition - Clark, Austin Hobart, 1880 -1954 (E. J. Brill, 1918)