TY  - GEN
AU  - Butt, Ferdinand H
AU  - John sen, Oskar A
TI  - Embryology of insects and myriapods; the development insects, centipedes, and millepedes- from egg desposition
T2  - Mc graw hill publications in the zoological sciences
U1  - 595.703 3 JOH 
CY  - Newyork, Mc GRaw- Hill Book Company Inc
KW  - Embryology- insects/ myriapods- embryology
ER  -