PS Magazine - TB 43-PS-463

PS, The Preventative Maintenance Monthly

ISSUE 463

JUNE 1991

PS Magazine - TB 43-PS-463 - Page 46 of 46
The Deser May FoRgive You foR a
Lot of Things. But Fo±getting to CleaN
Ai± Filte±s is ²OT One of ³hem.
t
IlL F±²TRi
AtU³S´
TW/±l ²AL³Y!


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