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L/B
abbr.	light bombardment; ratio of length to breadth
L.B.
abbr., earth.sc.	lower basin; lower bounds
abbr., econ.	letter book; lifeboat
L/B
abbr., mil.	light bomber
abbr., oil	load at break
L-B
abbr., earth.sc.	lingula-bivalves
abbr., el.	Langmuir-Blodgett deposition
L&B
abbr., fin.	lender and bank (bonly)
energ.ind.	leakage and breakage
L.&B.
abbr.	lock and bolt
l.b.
abbr.	long bill; long-dated bill
abbr., IT	least upper bound
abbr., telecom.	local battery
l/b
mining.	laden in bulk

L&B: 2 phrases in 2 subjects

Abbreviation	1
American stock exchange	1