UDC 613 Hygiene generally personal health and hygiene. BS 1000 (613):1980
B S I
UDC 613 Hygiene generally personal
health and hygiene. BS 1000 (613):1980 B S I - - London B S I 1980
025.43 UDC/BSI/17
UDC 613 Hygiene generally personal
health and hygiene. BS 1000 (613):1980 B S I - - London B S I 1980
025.43 UDC/BSI/17