P. NN. A°S

Publ. Lick.

Publ. Michigan.

Publ. Ottawa.

Publ. Potsdan.

Publ. Pulkoieo.

Publ. Victoria.

Sternberg Astr. Inst. Card.

Z. Aph.

Vu et permis d'imprimer :

Monthly Notices of the Royal Astronomical Society.

Nature.

The Observatory.

Physical Review.

Popular Astronomy.

Proceedings of the Royal Society of Edinburgh.

Proceedings of the National Academy of Sciences of the United States of America.

Publications of the American Astronomical Society.

Publications of the Astronomical Society of the Pacific.

Publications of the Lick Observatory.

Publications of the Observatory of the University of Michigan.

Publications of the Dominion Observatory Ottawa.

Publikationen des Astrophyskalischen Observatoriums zu Potsdam.

Publications de l'Observatoire central de Pulkowo.

Publications of the Dominion Astrophysical Observatory Victoria. Ë

Russian Astronomical Journal.

Sternberg Astronomical Institute Card.

Zeitsehnift für Astrophysik.

Vu et approuvé :

Paris, le 12 mai 1943. \

Le Dovex be La FaCuLré pes Sciences,

Pauz MONTEL.

Le RecTEUR DE L'ACADÈMIE DE Paris,

GusertT GIDEL.