00386nam a2200097Ia 450000500170000000800410001705000230005810000190008124501500010026000380025020251229124527.0251229s9999    xx            000 0 und d  aTHE TD 427 .T7N34   aGichuki, N. F. 0aDetermination of trace elements in surface and ground waters in the njoro region of Nakuru district by x-ray fluorescence analysis.cN. F Gichuki  aEgerton; Egerton Universityb1995