Transactions of the IAU - Vol.XIVA -Reports on astronomy
JAGER(Cornelis De)
Transactions of the IAU - Vol.XIVA -Reports on astronomy - D.Reidel 1970 - viii p. + 566 - International Astronomical Union .
Transactions of the IAU - Vol.XIVA -Reports on astronomy - D.Reidel 1970 - viii p. + 566 - International Astronomical Union .