  Experiments to determine the yields and bremsstrahlung flux-averaged
cross-sections <${\sigma}(E_{{\gamma}max})$> of photonuclear reactions on the
natural Mo targets were performed on the beam from the NSC KIPT electron linear
accelerator LUE-40 with the use of the ${\gamma}$-activation technique. The
bremsstrahlung end-point energies were in the range $E_{{\gamma}max}$ = 35...80
MeV. The bremsstrahlung quantum flux was calculated with the program GEANT4.9.2
and, in addition, was monitored using the $^{100}$Mo$({\gamma},n)^{99}$Mo
reaction. Calculations of the yields and average cross-sections
<${\sigma}(E_{{\gamma}max})$> for photonuclear reactions on stable Mo isotopes
were computed using the ${\sigma}(E)$ cross-sections from the TALYS1.95 code
(for the level density model LD1). A comparison of experimental and calculated
cross-sections <${\sigma}(E_{{\gamma}max})$> for reactions
$^{92}$Mo$({\gamma},2n)^{90}$Mo and $^{92}$Mo$({\gamma},pn)^{90}$Nb was
performed.
