Meat Packing Industry -- See Packing-houses Here are entered works on meat packing, i.e. the wholesale meat industry. Works on the packing of meat for shipment are entered under Meat--Packing.
Mechanical Analogies In Electricity -- See Electromechanical analogies Here are entered general works on the method of solving problems by electrical or mechanical analogies as well as its application to either mechanics or electricity. --subdivision Electromechanical analogies under scientific or technical topics, e.g. Concrete slabs--Electromechanical analogies
Mechanical Computers -- See Calculators Here are entered works on present-day calculators as well as on calculators and mechanical computers of pre-1945 vintage. Works on modern electronic computers first developed after 1945 are entered under Computers.
