LBS Thailand ( pressure unit )

LBS Thailand ( pressure unit )   (01/02/2014, 4:44 AM)

I have also problem with non ISO measurement units. For example I boght basket ball for my dother and on the ball is noted:
"MOISTEN NEEDLE INFLATE 7 TO 9 LBS
MADE IN THAILAND".
LBS is unit for mass, but in my case I would expect unit for pressure ( convert to ISO: Pa=N/m2 ).
So, where can I find that translation factor?

BR