Jamaican standard specification for the care and use of portable metal ladders 

 - Kingston  6 Winchester Rd, Kgn. 10  The Bureau  1980 
 - 9p  32cm 
 - (JS 77 : 1980) .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ladders - Standards
<br/><br/><label>Dewey Class. No.: </label> / $4.00 Pam 690.028  / Ja Jam