Individual topics ranged from taxonomy and historical relationships to management of insects and diseases.. 
George Richard Chamberlain (Ọjọ́ìbí Oṣù Kẹta 31, 1934) jẹ́ òṣèré ará Amẹ́ríkà.Àwọn òṣèré ará Amẹ́ríkà.. 