Exhibit 3.19

STATE OF MARYLAND
STATE DEPARTMENT OF ASSESSMENTS AND TAXATION

                       CERTIFICATE OF LIMITED PARTNERSHIP

         The undersigned general partners, for the purpose of forming a Limited
Partnership, pursuant to the provisions of Section 10-201 of the Corporation and
Associations Article of the Annotated Code of Maryland, to do interstate or
intrastate business as domestic limited partnership in the State of Maryland,
hereby certify the following:

A.     The name of the Limited Partnership is

       ________________________________________________________________________

B.     The address of the principal office in Maryland is

       ________________________________________________________________________
       ________________________________________________________________________

C.     The name and address of each general partner:

       NAME OF GENERAL PARTNER               ADDRESS
____________________________________         __________________________________
____________________________________         __________________________________
____________________________________         __________________________________
____________________________________         __________________________________

D.     The name and address of its resident agent in Maryland is THE CORPORATION
       TRUST INCORPORATED, 300 East Lombard Street, Baltimore, Maryland 21202.

E.     The latest date upon which the limited partnership is to dissolve is
       ____________, _____, or if left blank, the existence is perpetual subject
       to the events of dissolution in Section 10-801, Corporations and
       Associated, the Annotated Code of Maryland.

F.     Additional matters to be included in the certificate of limited
       partnership:

       ________________________________________________________________________
       ________________________________________________________________________
       ________________________________________________________________________




                                          Dated:________________, _____


                                          ______________________________________

                                          ______________________________________

                                          ______________________________________


(Each general partner must execute this document; name(s) must be typed
underneath signature(s).)

I hereby consent to my designation in this document as resident agent for this
limited partnership.

THE CORPORATION TRUST INCORPORATED

_______________________________
        Resident Agent