Die Farbenempfindung der Netzhautperipherie bei Dunkeladaptation und konstanter subjektiver Helligkeit .. Q Science
Design in nature, illustrated by spiral and other arrangements in the inorganic and organic kingdoms as exemplified in matter, force, life, growth, rhythms, &c., especially in crystals, plants, and animals. With examples selected from the reproductive, alimentary, respiratory, circulatory, nervous, muscular, osseous, locomotory, and other systems of animals Q Science
