Instrumentation abbreviations:

picc piccolo timp timpani
fl flute pr principale (solo)
ob oboe vn violin
cl clarinet va viola
fg bassoon vc violoncello
cor horn b bass
trbe trumpet SATB soprano, alto, tenor, bass
trbn trombone org organ
pfte pianoforte 2vn violin I, II (Also 2va, 2vc, 2cor etc.)
cemb harpsichord

Orchestra and ensemble instrumentation is given in the following order:

[Solo Instrument]; voices / flute , oboe,clarinet,bassoon/ horn,trumpet/timpani/harpsichord/violin,viola,violoncello,bass/organ

For example, pfte; 2fl 2cl 2fag 2cor 2trbe timp 2vn va vc b will consists of 2 flutes, 2 clarinets, 2 bassoons, 2 horns, 2 trumpets, timpani, Violin I & II, viola, cello and bass.