Procopius, (born probably between 490 and 507, Caesarea, Palestine [now in Israel]), Byzantine historian whose works are an indispensable source for his period and contain much geographical information.
Apart from the surgery, antitubercular drug therapy was still indispensable for a time period [ 4, 5].
However, continuous observations over long time periods are indispensable for assessing certain longterm effects, such as maximum density and tree survival for different ages and initial espacements, and the effects of changing environmental conditions.
I would be remiss if I didn't call attention to the colleagues who are standing here with me because this was truly a team effort: Martin Indyk, whose home was a site of so many of the discussions played an indispensable role throughout, in a period not only when I was here, with also my other colleagues on the team, but in the periods when we were not here.
If fluorescent light is detected in the image, solving the problem of low-frequency intensity flicker and variable coloration occurring in the short exposure periods, the first indispensable step is to make the long exposure time equal to a multiple of the fluorescence light period (e.g., to 1/100 s or 1/120 s, depending on the mains frequency; see Figure 14).
Particularly indispensable for anyone studying contact-period Mexico is the Florentine Codex (held by the Medicean-Laurentian Library in Florence), a twelve-book compendium detailing religious belief and practice, moral philosophy, daily life, natural history, and the Spanish conquest.
With the development of mathematical astronomy in the Seleucid period, however, it became indispensable.
The 1992 translation of Khakhina's Concepts of Symbiogenesis (Russian original 1979) is an indispensable reference on Mereschkowsky and his period.
Essentialists stressed those human experiences that they believed were indispensable to people of all time periods.
During the Tokugawa period (1603 1868), netsukes were an indispensable item of dress as well as being fine works of miniature art.
Even with the use of washout periods, which are for many applications widely accepted as an indispensable component, the effect of a treatment from a previous period may not be completely eliminated.
