180 Yerygin, P.S., 1980. The Physiology of Rice. A Monograph. Kolos Publishers (Agricul- ture), Moscow, 260 pp., illus., VAAP INFO No. 15/6. Zeigler, L.W. and Wolfe, H.S., 1979. Citrus Growing in Florida. Revised edition. Universi- ty Press of Florida, Gainesville, FL, x + 246 pp., illus., no. 488, U.S. $11.00. Announcement THIRD INTERNATIONAL CONGRESS OF ECOLOGY Under the auspices of: The International Association for Ecology (INTECOL); The Inter- national Union for Biological Sciencs (IUBS) and The Polish Academy of Sciences Major theme: 'Ecology as a Basis for Environmental Management and Human Welfare' T/me: 5--11 September 1982. Place: Warsaw, Poland. lnfo: Congress Secretariat of IIIrd International Congress, Institute of Ecology, DziekanSw Le~ny, 05-150 Lomianki, Poland. Telex: 817378 IE PAN PL.

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180

Yerygin, P.S., 1980. The Physiology of Rice. A Monograph. Kolos Publishers (Agricul- ture), Moscow, 260 pp., illus., VAAP INFO No. 15/6.

Zeigler, L.W. and Wolfe, H.S., 1979. Citrus Growing in Florida. Revised edition. Universi- ty Press of Florida, Gainesville, FL, x + 246 pp., illus., no. 488, U.S. $11.00.

A n n o u n c e m e n t

THIRD INTERNATIONAL CONGRESS OF ECOLOGY

Under the auspices of: The International Association for Ecology (INTECOL); The Inter- national Union for Biological Sciencs (IUBS) and The Polish Academy of Sciences

Major theme: 'Ecology as a Basis for Environmental Management and Human Welfare'

T/me: 5--11 September 1982.

Place: Warsaw, Poland.

lnfo: Congress Secretariat of IIIrd International Congress, Institute of Ecology, DziekanSw Le~ny, 05-150 Lomianki, Poland. Telex: 817378 IE PAN PL.