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Short desc: Scientific and Medical Advances in the 20th Century
Issuer: Palau Date: 5/10/2000 Occasion: unset Consists of 22 stamps: (See stamps as list) 33c d=James Watson 33c 33c d=Michael Smith 33c d=Paul Berg 33c 33c 33c d=Phillip Sharp 33c d=Harold Varmus and Michael Bishop 33c d=Daniel Nathans 33c d=Marshall Nirenberg 33c d=Francis Crick 33c 33c d=Kary Mullis 33c d=Frederick Sanger and Walter Gilbert 33c 33c d=Maurice Wilkins 33c d=Richard Roberts 33c d=Hamilton Smith and Werner Arber 33c d=Har Gobind Khorana and Robert Holley 33c $2 $2 All are perf=14 |