Cast iron pipe, in all regular sizes ... : standard specification, dimensions and weights.

Mode of access: Internet.

Specification of patterns over time in Chicago homicide : increases and decreases, 1965-1981 /

"October 1985."

Hints to young architects ... together with a model specification: involving a great variety of instructive and suggestive matter,

Mode of access: Internet.

Some key problems concerning the specification, development and use of task identification and analyses /

Photocopy.

Patent specification.

Mode of access: Internet.