TY  - RPRT
TI  - Problems in world-wide standardization of the units of altitude measurement 
AU  - Gilsinn., Judith F
PY  - 1978
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 77-1386
DO  - 10.6028/NBS.IR.77-1386
ER  -