Results 71 to 80 of about 6,668,458 (167)

Advancements in Syphilis Vaccine Development. [PDF]

open access: yesSex Transm Dis
Giacani L   +4 more
europepmc   +1 more source

A rare case of neurosyphilis presenting as generalized dystonia with bilateral cerebellar infarctions. [PDF]

open access: yesCurr J Neurol, 2022
Nuzhnyi E   +6 more
europepmc   +1 more source

Tractor Testing; Belt Test; Allis Chalmers

open access: yes, 1948
Official belt test no. 397 Allis-Chalmers HD19." The Allis-Chalmers HD-19 crawler on berlt power test inside the tractor test lab. Technician Joe Flamm stands measuring belt speed with a hand-held tachometer.
Nebraska Tractor Test Laboratory
core  

Test no. 394 Massey-Harris 55. 1948.

open access: yes, 1948
Three-quarter view from the front of the Massey-Harris tractor on the test track.
Nebraska Tractor Test Laboratory
core  

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