marco

1

In Mexico, 20th century, a unit of mass, approximately 28.775 grams.

United Nations, 1966.

2

In Mexico, 16th century, a unit of length used in measuring fields, = 2 7/8 varas.

Ward Barrett.
Jugerum and Caballeria in New Spain.
Agricultural History, vol. 53, no. 2 pages 423-437 (April 1979).

Galván Riviera, 1844. Excerpt in Spanish with English translation.

3

In Portugal, a unit of mass, = 8 oncas, about 229.5 grams.

4

In Spain, a unit of mass, about 230.07 grams.

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