Mechanical movements
notation: TJ181-TJ210
type: Concept

Machinery
notation: TJ
type: Concept

Machinery
type: Concept

Simple machines
member: collection LCSH General
member: collection SubdivideGeographicalIndirect
member: collection LCSHAuthorizedHeadings
modified: 1996-07-29T09:49:31
type: Concept
broader: Machinery
broader: Mechanical movements
broader: Mechanics
created: 1986-02-11T00:00:00
in scheme: lcsh
alternative label: Machines, Simple

Mechanics
notation: QA801-QA938
notation: QC120-QC168.86
type: Concept