TY  - BOOK
AU  - Jarden,Dov
TI  - Constructions with the bi-ruler and with the double-ruler
AV  - QA464 .J34
PY  - 1964///
CY  - Jerusalem
KW  - Geometrical constructions
KW  - Rulers (Instruments)
N1  - Bibliography: p. 124-126
ER  -